what is the formula for finding cost price?

1) The price of sugar increases by 25%. By what % must a house-wife reduce her consumption so that the expenditure does not increase.

2) In an examination, 95% of candidates passed and 25 failed. How many candidates appeared for the examination?

Find the ratio of:

(a) Rs 5 to 50 paise (b) 15 kg to 210 g

(c) 9 m to 27 cm (d) 30 days to 36 hours

At what rate percent per annum will a sum of money double in 8 years ?

What amount is 10% more than Rs 90 ?

Find the whole quantity if

(a) 5% of it is 600 (b) 12% of it is 1080

(c) 40% of it is 500 km (d) 70% of it is 14 minutes

(e) 8% of it is 40 litres

Convert each part of the ratio to percentage:

(a) 3:1 (b) 2:3:5 (c) 1:4 (d) 1:2:5

An ore contains 12% copper.how many kilograms of the ore are required to get 69 kg of copper?

1200 soldiers in a fort had enough food for 28 days.After 4 days some soldiers were transferred to another fort and thus the food lasted for an extra 32 days .How many soldiers left the fort?

The perimeter of a circle is equal to that of a square. Their areas are in the ratio of ____.

A vendor purchased 40 dozens bananas for Rs250. Out of these 30 bananas were rotten and could not be sold. At what rate per dozen should he sell the remaining bananas to make a profit of 20%.

Juhi sells a washing machine for Rs 13, 500. She loses 20% in the bargain. What was the price at which she bought it?Can you please explain it in a simple manner.

a:b=2:3

b:c=4:5

then a:c=

A number exceeds 20% of itself by 40.What is the number?

70% of the students in a school are boys and the number of girls is 504. Find the number of boys in the school

Two numbers are 20% and 25% less than a third number respectively. how much % is the second number less than the first number ?

A bicycle dealer allows 10% discount and still makes profit of 20% on his bicycle.if the total profit he makes is Rs 150,find the list price of the bicycle

In how much time would the simple interes on a certain sum be 0.125 times the principal at 10% per annum?

 In an examination, 96% of the candidates passed and 50 failed. How many candidates appeared?

A borrows RS8000 at 12% per annum simple intrest and B borrows RS 9100 at 10% per annum simple intrest.In how many years will their amount be equal

In an election between two candidates, the candidates who gets 30% of the votes polled is defeated by 15000 votes. What is the number of votes polled by the winning canndidate?

What rate gives Rs 280 as interest on a sum of Rs 56000 in 2 years ?

IN AN EXAMINATION 40%OF THE STUDENTS FAILED IN MATHS,30% FAILED IN ENGLISH AND 10% FAILED IN BOTH . FIND THE PERCENTAGE OF STUDENTS WHO PASSED IN BOTH THE SUBJECTS ---------------------

on selling a mobile for rupees 750 a shopkeeper looses 10%.for what amount should he sell it to gain 5%

selling price of a toy car is Rs540.If the profit made by shopkeeper is 20%,what is the CP of the toy.

Ans int the textbook: CP+20/100 XCP = { 1+1/5} CP. =6/5CP. 540 x 5/6 CP. 0r 450Rs.

This eg is done in the textbook.page169.Iam not getting how they got this 1.

 Q:  a man sold two radios at Rs.4800 each. On one he gains 20% and on the other he  loses 20%. Find the gain or loss percent in the whole transaction. ( frm r.s aggarwal example 11) plz answer it fast

 If a certain principal amounts to Rs 44000 at 5 percent p.a. over 2 years, how much will it amount to in 3 years at the same rate ?

Shikha deposited Rs 2000 in a bank which pays 6% simple intrest.She withdrew Rs 700 at the end of first year .What will be her balance after 3 years?

what percent of 1 day is 36 minutes?

A number increased by 20% gives 42. What is the number?

 1. what principal will amount to Rs 900 in 6 years at 10% simple interest?

Sameer bought 1600 bananas at Rs 3.75 a dozen. He sold 900 of them at 2 for Rs1 and remaining at 5 for Rs2 . Find the Gain or Loss percent.Find the C.P and S.P and compare.

Find the C.P and S.P and compare.

Meeta saves Rs 400 from her salary. If this is 10% of her salary. What is her salary?

FIND THE  WHOLE quontity  if % 

5%  of  it  is 600

 5%  of  it is  600

In which type of questions unitary method can help?

My mother says, in her childhood petrol was Re 1 a litre. It is Rs 52 per litre today. By what Percentage has the price gone up?

Dear Sir,

Pls help me solve his simple interest problem.

Divide 3600 into two parts such that if one part be lend at 9% per annum and other part at 10% per annum the total annual income is Rs.333/-

Apprecaite your response.

A man sells an article at a gain of 5%. If he had sold it at Rs. 63 less, he would have lost 2%.Find the cost of the article.

by selling a jug for rs. 144 , a men loses 1/7 of his outlay . if it is sold for 189, what is the gain percent.

what is 1% of 1 hour ?

 11 oranges are bought for Rs. 10 and 10 oranges are sold for Rs. 11. The gain (or) loss percent is 

Fabina borrows Rs 12,500 at 12% per annum for 3 years at simple interest and Radha borrows the same amount for the same time period at 10% per annum, compounded annually. Who pays more interest and by how much?

90% ofall students passeed in Hindi, 85% in Maths and 150 students passed in both. Find the total number of students in the school.

draw a rough sketch of two triangles such that they have five pairs of congruent parts but still the triangles are not congruent?

 in the ratio 7/8 , if the consequent is 40, what is the antecedent?