28% members of a certain group are married. What is the respective ratio between the number of married members to the number of unmarried members?

A box contains 56 in the form of coins of one rupee, 50 paise and 25 paise. The number of 50 paise coins is double the number of 25 paise coins and four times the number of one rupee coins. How many 50 paise  coins are there in the box?

If the length of a rectangle increased by 20 % and breadth is decreased by 12.5 % Find the percentage increase in the Area ?

If the radius of a right circular cylinder is decreased by 50% and its height is increased by 60%, its volume will be decreased by

In an examination, 93% of students passed and 252 failed. The total number of students appearing at the examination was:

If a number multiplied by 25 % of itself gives a number which is 200% more than the number, then 25% of the number is -

The expenses on rice, fish and oil of a family are in the ratio 12 : 17 : 3. The price of these articles are increased by 20 % , 30 % and 50 % respectively. The total expenses of family on these articles are increased by: