The difference between the value of the number increased by 20 % and the value of the number decreased by 25 % is 36. Find the number. 

A number if required by 25% becomes 225. By what percent should be increased so that it becomes 375?

In a school, number of girls is 75% of number of boys. Difference between boys and girls is 30. On a particular day 20% girls were absent, then find the number of girls those who present? 

A number is decreased by 20% to get another number. The number so obtained is increased by 200% to get a third number. The difference of the third number and the original number is what percentage more or less than the difference of second and the third number?

Sandeep's salary is 20% more than that of Aron. If Sandeep saves Rs.720 which is 4% of his salary, then Aron's salary (in Rs.) is

If the radius of a circle is decreased by 50%, its area is reduced by

A reduction of 20% in the price of wheat a person enables to purchase 4 kg more for Rs. 160. Find the original price of wheat?

What percentage of the whole week does Ajay spend in office, if his office hours are 9 am to 5 pm from Monday to Friday?