If the price of petrol increases by 25 and Raj intends to spend only an additional 15 on petrol, by how much  will he reduce the quantity of petrol purchased?

Two merchants sell, each an article for Rs.1000. If Merchant $A$ computes his profit on cost price, while Merchant $B$ computes his profit on selling price, they end up making profits of 25% respectively. By how much is the profit made by Merchant $B$ greater than that of Merchant $A$?

A student multiplied a number by 3/5 instead of 5/3. What is the percentage error in the calculation?

A vendor sells 60 percent of apples he had and throws away 15 percent of the remainder. Next day he sells 50 percent of the remainder and throws away the rest. What percent of his apples does the vendor throw?

If b equals 10% of a and c equals 20% of b, then which one of the following equals 30% of c?

The difference between two numbers is 1550. If 8 % of one number is 10 % of the other number, then find the two numbers

The value of lathe machine depreciates at the rate of 10 % per annum. If the cost of machine at present is Rs. 160,000, then what will be its worth after 2 years?

The present population of a country is 10 crores. If it rises to 17.28 crores during next 3 years, then find uniform rate of growth in population.

The price of diesel increases by 50 %. Find by how much percent a truck owner must reduce his consumption in order to maintain the same budget?

A student attempts x number of questions. He answers 15 correctly out of first 20 questions and of the remaining questions, he answers 1/3 correctly. If all questions have same credit and the student gets 50 % marks, then find the value of x.

A student multiplied a number by 3/5 instead of 5/3, What is the percentage error in the calculation ?

If 20% of a = b, then b% of 20 is the same as :

What percent of 7.2 kg is 18 gms ?

405 sweets were distributed equally among children in such a way that the number of sweets received by each child is 20% of the total number of children. How many sweets did each child recieve ?

1100 boys and 700 girls are examined in a test; 42% of the boys and 30% of the girls pass. The percentage of the total who failed is :

If x is 80% of y, then what percent of 2x is y?

The ratio 5 : 4 expressed as a percent equals :

If the numerator of a fraction is increased by 150% and the denominator of the fraction is increased by 350%, the resultant fraction is 25/51. What is the original fraction ?

If the pice of sugar rises from Rs. 6 per kg to Rs. 7.50 per kg, a person, to have no increase in his expenditure on sugar, will have to reduce his consumpion of sugar by

The sum of the number of boys and girls in a school is 150. if the number of boys is x, then the number of girls becomes x% of the total number of students. The number of boys is :

Of the 1000 inhabitants of a town, 60 % are males of whom 120 % are literate. If, of all the inhabitants, 25% are literate, then what percent of the females of the town are literate ?

In a competitive examination in State A, 6% candidates got selected from the total appeared candidates. State B had an equal number of candidates appeared and 7% candidates got selected with 80 more candidates got selected than A. What was the number of candidates appeared from each State ?

A fruit seller had some oranges. He sells 30% oranges and still has 140 mangoes. Originally, he had:

A student erroneously multiplied a number by 2/5 instead of 5/2.What is the percentage error in the calculation?

The total population of a village increased from 1,80,00 to 22, 500 in a decade. The average percentage increase of population per year of that village is:

If in a society of 250, there are 40 % literates and among illiterates, there are 60 % males, then among totality of society, what percentage are illiterate women?

There is a certain amount from which A takes 25% then B takes 50% of remaining amount, then C takes 75% of the remaining amount. Now if the amount left is 5,760 then what is the actual sum?

The percentage change of a number when it is first decreased by 10% and then increased by 10% is