By what quantity the use of coal is to be reduced to keep one’s family budget same when the price of coal is increased by 50%?

The population of a town 2 years ago was 245000. It increased by 15% in the first year and then increased by 20% in the second year. What is the current population of the town?

Raman’s height is \(33\frac{1}{3}\% \) more than that of Dhirendra. If Dhirendra’s height is 60 inches, then how much percent Dhirendra’s height is less than that of Raman?

In a medical certificate, by mistake a candidate gave his height as 23% more than normal. In the interview panel, he clarified that his height was 5 feet 7 inches. Find the percentage correction made by the candidate from his stated height to his actual height.

A natural number P is 90% less than half of its square. By what percentage the cube of successor of P is greater than cube of P?

From the salary of an officer, 10% is deducted as house rent, 15% of the rest he spends on children’s education and 10% of the balance, he spends on clothes. After this expenditure he is left with Rs. 1377. His salary is

If a natural number P is increased by 1, its cube increases by 33.1%. What is the value of the square of P?

In school X, there are 600 pupils of whom one quarter are girls. In school Y, there are 500 pupils of whom three-fifth are girls, and in school Z there are 700 pupils of whom half are girls. What percentage of the total number of pupils in the three schools is comprised of girls?

Sophia invests 37% of her monthly salary in insurance policies. She spends 17% of her monthly salary in shopping and 21% of her salary on household expenses. She saves the remaining amount of Rs. 9,025. What is Sophia’s annual income?

For annual income in the slab of Rs. 1200000 to 2000000, a person pays tax at 20% over the surplus on Rs. 1200000. Sunil’s annual salary is Rs. 1500000. How much tax does he pays per annum?

Anjali’s monthly expenditures and savings are in the ratio 5 : 4. If her income increases by 12% and expenditure by 17%, then by how much per cent to her savings increase?

Mrs. Sheela spends 18% of her monthly income for the children’s education. She spends 32% of her monthly income in household expenses and 12% in travelling. She spends 55% of the remaining amount in gambling and manages to save only Rs. 7315 at the end of the month. What is Mrs. Sheela’s monthly income?

A vessel of 80 liters is filled with milk and water. 70% of milk and 30% of water is taken out of the vessel. It is found that the vessel is vacated by 55%, find the initial quantity of water.

The C.P. of an article is 40% of the S.P. The percent that the S.P. is of C.P. is

A sum of Rs. 825 is divided among A, B and C such that ‘A’ receives 50% more than ‘B’ and ‘B’ receives 30% less than ‘C’. What is the ‘A’s share in the amount?

In the expression ab2, the values of both variables a and b are decreased by 20%. By this, the value of the expression is decreased by

A student has to secure a minimum 35% marks to pass an examination. If he gets 200 marks and fails by 10 marks, then the maximum marks in the examination are:

When 30% of a number is added to another number, the second number increases by 60%. What is the respective ratio between the first and the second number?

63% of \(3\frac{4}{7}\) is:

The value of a machine depreciates 10% annually which was purchased 3 years ago. If its present value is Rs. 6,000, approximately what was its purchase price?

A number is increased by 40% then again by 40%. Then it is decreased by 40%. By what percent the original number has changed?

A salesman is appointed on the basic salary of Rs. 1200 per month and the condition that for every sales of Rs. 10,000 and above Rs. 10,000, he will get 50% of basic salary and 10% of the sales as a reward. This incentive scheme does not operate for the first Rs. 10000 of sales. What should be the value of sales if he wants to earn Rs. 7600 in a particular month?

What value should come in place of the question mark (?) in the following question? ?% of 280 + 18% of (2200 ÷ 4) = 143.8

An insurance collector receives 15% commissions on the premium collected per week. How much must he collect per week in order that his annual income may be Rs.6500/-?

Shreyas bought an article and sold for 150% per cent of its cost price. What was the cost price of the article, if Shreyas sold it for Rs. 750?

The price of a watch is increased by 25%. By what percent the price should be decreased to restore its original price?

Robin decided to donate 16% of his monthly salary to an NGO. On the day of donation, he changed his mind and donated Rs. 7,705 which was 67% of what he had decided earlier. How much is Robin’s monthly salary?

Ram ate half a cheese on Monday, he ate half of what was left on Tuesday and so on. He followed this pattern for one week. How much of the cheese would he have eaten during the week?

Find the original fraction if in a fraction, numerator in increased by 25% and the denominator is decreased by 10%. The new fraction then obtained is 5/9.

Two numbers are respectively 12% and 25% more than a third number. The first number is approximately how much per cent of the second number?