A boat which has a speed of 5 km/hr in still water crosses a river of width 1 km along the shortest possible path in 15 minutes. The velocity of the river water in km/hr is ?

The ratio of Neha's age to that of Jane is 4:7 and the ratio of Jane's age to that of Smita is 4:3. If Smita is 21 years old, how old is Neha?

what is the formula of simple interest and compound interest

PROVIDE ME SOLUTION OF R S AGARWAL

A's income is 20 % less than that of B's. How much per cent is B's income more than A's ? Solve it by two methods. First by 100. Second by taking "x"?

find the rate of discount being given on a shirt whose selling price is rs 546 deducting a discount of rs 104 on its marked price

The salary of an officer is increased by 25%. By what percent should the new salary be decreased to restore the original salary?

a sum of 390200 is to be paid back in 3 equal annual installments how much is each installments if rate is 4% per annum compounded annually

Why cant we do this in this manner?

Let the principal 390200 be divided into 3 sums say P, Q R such that P+Q+R = 390200

Let an instalment of Rs I be paid after 1 year to clear a principal of P therefore

P*104 / 100 = I

Let an instalment of Rs I be paid after 2 years to clear a principal of Q therefore

Q * 104 * 104 /10000 = I

Let an instalment of Rs I be paid after 3 years to clear a principal of R therefore

R* 104 *104 *104 / 1000000 = I

so I *100/104 = P

I * 10000 /10816 = Q

I * 1000000 /1124864 = R so {(100 /104) + (10000 /10816) + (1000000 /1124864)} I = P+Q+R = 390200.

{(1081600 + 1040000 + 1000000 ) / 1124864 } I = 390200

(3121600 /1124864 )I = 390200

I = 1124864/8 = 140608

 How much percent above the cost price should a shopkeeper mark his goods so that after allowing a discount of 20% on the marked price, he gains 12%?

a number is increased by 10% and then decreased by10% . find the increase or decrease percent.

Find the amount to be paid at the end of six months on Rs 625 at 8 % per annum compounded quarterly.

i want to solution of 8th class maths book -lets grow comp. maths-8 -arya book depot

what is the answerof the TRY THESE (down) on pg.123 of the lesson Comparing Quantities? i need a quick reply plz

a man bought bananas at the rate of rs.20 per dozen and sold them at th rate of 10 for rs 25. find his gain or loss per cent.

abhay borrowed Rs 16000 at 15/2 % per annum simple interest. On the same day , he lent it to Gurmeet at the same rate but compounded annually. What does he gain at the end of 2 years?

th difference between the compound interest and simple interest on a certain sum for 2years at 6per cent per annum is rs 90 find the sum

a dealer gets Rs 470 more if instead of selling a table at a loss of 10% , it is sold at a gain of 10%. Find the cost price of the table.

A grocer purchased 200kg of rice at Rs.25 per kg. He sold 80 kg of it at a gain of 10% and 40 kg at a loss of 4%. At what rate per kg should he sell the remainder to gain 8% on his total investment?

 Manufacturer A sells a washing machine to a trader B for Rs 12,500. Trader B sells it to a trader C at a profit of Rs 800 and trader C sells it to a customer at a profit of Rs 1,300. If the rate of VAT is 8% , find:

i) the amount of VAT received by the state govt on the sale of this machine,

ii) the amount that the consumer pays for the machine.

By selling 125 cassettes a man gains an amount equal to the selling price of 5 cassettes. Find he gain percent

gunpowder contains 75% niter and 10% sulphur. Find the amount of gunpowder which carries 9 kg nitre. what amount of gunpowder would contain 2.5 kg sulphur?

 the compound interest calculated yearly on a certain sum of money for the second year is Rs. 880 and for the third year is Rs.968 calculate the rate of interest and the actual money

The value of a machine depreciates at the rate of 10% per annum . It was purchased 3 years ago . If its present value is Rs.291600, for how much was it purchased? please give answer fast.

A washing machine is available for Rs. 13,500 cash or Rs. 6,500 as cash down

payment followed by three monthly instalments of Rs. 2,500 each. Find the rate of

interest charged under instalment plan.

In Solving this question

Cash price of washing machine = Rs. 135000

Cash down payment = Rs. 6500

Balance due = Rs(13500 – 6500) = rs. 7000

No. of equal instalments = 3

Amountof each instalment =rs. 2500

Amount paid in installment = Rs. 7500

Therefore, interest paid in installment scheme = rs(7500-7000) = rs. 500

Principal for the 1^stmonth = Rs. 7000

Principal for the 2^ndmonth = Rs. 4500

Principal for the 3^rdmonth = Rs. 2000

Total = Rs. 13500

Let the rate of interest be r% per annum

I = p*r*1 / 1200

Then, I = 13500*r*1 / 100*12

=> 500 =13500*r*1 / 100*12

=>r = 500*12/ 135

=>r = 44.4 %

Why We Have Taken The Time As One Month

laxmi sold 2 sarees for 2185 each on one she lost 5% while on other she gained 15% find gain or loss percent in the whole transaction

A man sold two watches at rs 240 each on one he gained 7% and on another he loss 7 % . The gain or loss percent is

1. 7% gain
2. 7%loss
3. 0.49%gain
4. 0.49%loss

1.  Ravish sold his cycle to Vineet at a loss of 28%. Vineet spent Rs.1680 on it's repairs and sold it to Rahul for Rs.35910, thereby making a profit of 12.5%, find the original cost price.
2. A toy was sold at a gain of 12%. Had it been sold for Rs.33 more, the gain would have been 14%. Find the cost price of the toy.
3. A man bought an article and sold it at a gain of 10%, If he had bought it for 20% less and sold it for Rs.10 more, he would have made a profit of 40%. Find the cost price of the article

A dealer buys 50 chairs for Rs.50,000 but 20 of them are damaged. He decides to sell each damaged one one at 50% of the price of the normal one . What should this price be in order that he may make a profit of 25% on the whole transaction?

 By selling 144 hens, Mala lost the S. P. of 6 hens. Find her loss%.

What price should a shopkeeper mark on an article which costs him Rs 880 so as to gain 25% after allowing a discount of 12% .

 The C.I. on a certain sum for 2 years is Rs.410 and S.I. is Rs.400. The rate of interest per annum is ______________.

If A's age is 30% of B and B's age is 40% of C, then what per cent of C's age is A's age?

Kamala borrowed Rs 26400 from a Bank to buy a scooter at a rate of 15% p.a. compounded yearly. What amount will she pay at the end of 2 years and 4 months to clear the loan?

(Hint: Find A for 2 years with interest is compounded yearly and then find SI on the 2^nd year amount for years.)

An almirah is sold at Rs5225 after allowing a discount of 5%. Find its marked price. Please explain with unitary method and also with other method of calculating discount amount.

Maria invested Rs 8,000 in a business. She would be paid interest at 5% per annum compounded annually. Find.

(i) The amount credited against her name at the end of the second year

(ii) The interest for the 3^rd year.

 In a factory the production of scooters rose to 48400 from 40000 in 2 years. Find the rate of growth per annum.

The cost price of 12 candles is equal to the selling price of 15 candles. Find the loss percent.

If Chameli had Rs 600 left after spending 75% of her money, how much did she have in the beginning?

My friend and I went to buy earrings. The shopkeeper said each pair of earrings cost Rs. 12, but offered 12 pairs for Rs. 100.

Roughly how much discount am I getting if I buy 12 pairs?

. By reducing the selling price of an article by Rs. 50, a gain of 5% turns into a loss of 5%. Find the original selling price of the article.

Please explain these few questions properly, step by step.

1)55% of students in a school are boys and the number of girls are 810. Find the total number of students and the number of girls.
2)Find a number which:
i) When increased by 10% becomes 77.
ii) When increased by 8% becomes 115.

3)Aditya's income is 20% less than that of Arnav. How much percent is Arnav's income more than Aditya's income?
4)The price of sugar increases by 20%. By what percentage should a housewife reduce consumption so that her expenditure does not increase?
5)At what rate percent will a sum of money double itself in 8 years?

Please explain properly! Thankyou.

Some toffees are bought at the rate of 11 for Rs 10 &the same number at the rate of 9 for Rs 10. If the whole lot is sold at one rupee per toffee. find the gain or loss in the whole transaction.

a jeweller allows a discount of 16% to his customers & still gains 20% . find the MP of a ring which cost him RS1190.

please help me in this ques:-

• The difference between increasing a number by 8% and decreasing it by 7% is 75. what is the number?

Arif took a loan of Rs 80,000 from a bank. If the rate of interest is 10% per annum, find the difference in amounts he would be paying after years if the interest is

(i) Compounded annually

(ii) Compounded half yearly

At what rate percentage per annum will a sum of rupees 4000 yeild compound interest of rupees 410 in 2 years.

A shopkeeper bought two TV sets at Rs. 10000 each. He sold one at a profit of 10% and the other at a loss of 10 %. Find whether he made an overall profit or loss ?

an article costs Rs.700 to the manufacturer.He sells it to the retailer at a profit of 20 percent.the retaier marks the price 40percent abovebthe pricebhe paid to the manufacture.later,he allows a discount of 10 percent on MP(marked price) find the amount paid my the costomer to the retailer

A dealer bought a refrigerator for Rs.11515, after allowing a discount for 16% on its marked price, he gains 20%, find the marked price of the refrigerator.

If the cost of 10 chairs is equal to the selling price of 16 chairs, find the gain or loss percent.

A Bicycle Can Be Purchased On A Cash Payment Of Rs 1500. The Same Bicycle Can Also Be Purchased At The Down Payment(initial payment at the time of purchasing) Of Rs 350 And Rest Can Be Paid In 3 Equal Installments Of Rs 400 For Next 3 Months.Find The Rate Of SI Charged By The Dealer

A wholesaler allows a discount of 20% on the list price of an article to a retailer.The retailer sells it at 5% discount on the list price . If the customer pays Rs 38 for the article, what is the retailer"s profit

(please give the answer this question with solution) Chapter name is DISCOUNT

Dinesh sold his motorcycle to Naveen at a loss of 28% Naveen spent Rs1680 on its repairs and sold it to Saran for Rs35,910 making a profit of 12.5% Find the cost of the motorcycle for Dinesh

by what percent is rs.2000 less than rs.2400 ?is this same as the percent by which rs. 2400 is more than rs.2000 ?????

 Mahesh and Umesh purchase a radio each for the same price and both mark up their respective radios by the same amount. Mahesh gives a discount of Rs. 20 followed by another discount of 20% on the reduced price, while Umesh gives a discount of 20% followed a discount of Rs. 20. If Mahesh's profit percent is equal to thrice Umesh's loss percent, The profit (in Rs.) of Mahesh on his radio is ?

1. The value of a machine depreciates every year by 10%. If its present value is rs. 38700, find its value a year ago.
2. The salary of a bank clerk was incresed by 7%. If his present salary is rs. 8025, what was it before increment?

Q.1 ONE KG OF TEA AND ONE KG OF SUGAR TOGETHER COST RS 95.IF THE PRICE OF TEA FALLS BY 10% AND THAT OF SUGAR RISES BY 20%,THEN THE PRICE OF ONE KG OF EACH COMBINE COMES TO RS 90.FIND THE ORIGINAL PRICE OF TEA IN RS PER KG?{EXPERTS PLEASE SEND ME SOME LINK AS I HAVE A LITTLE CONFUSION IN SOLVING THE QUESTIONS WITH THE HELP OF VARIABLE}?

Find the rate percent per annum, if Rs.2000 amount to Rs.2315.25 in an year and a half, interest being compounded 6 monthly

By selling a bicycle for rs 1,104, nitish loses 8%. At what price should he sell it to make a profit of 10%. Please answer fast

the difference in simple interest and compound interest on a certain sum of money at 6 2/3 per anum for 3 years is rs 46. determine the sum?

Ramesh bought two boxes for Rs 1300.He sold one box at a profit of 20% and the other box at a loss of 12%.If the s.p.of both boxes in the same ,find the c.p. of each box.....ans ts.....

 Find the amount and the compound interest on Rs 10,000 for years at 10% per annum, compounded half yearly. Would this interest be more than the interest he would get if it was compounded annually?

a dealer gets Rs.56 less if instead of selling a chair at a gain of 15%, it is sold at a gain of 8%. what is the CP of the chair?

In what time will Rs 1000 amount to Rs 1331 at 10% p.a compound interest ?

Shanti has enough money to buy 90 pumps worth Rs 500 each. How many pumps can he buy, if he gets a discount of Rs 50 on each pump.

1. A shopkeeper offers his customers 10% discount and still makes a profit of 26%. What is the actual cost of an article marked Rs 280?
2. A person sells an article for Rs 550, gaining 1/10 of its C.P. Find gain%.

plzz answer these.,!!

Out of her total income Mrs Sharma spends 20% on house rent and 70% of the rest on household expenditure. If she saves rs 1800, what is the total income?

The difference in prices when a commodity is sold at a profit of 4% and at a profit of 6% is Rs3 Find the selling prices off the commodity in the two cases