8 years ago, the ratio of A's age to B's age was 4 :5 At present the ratio of B's age and C's age is 4 : 5 At present , the difference between A's age and C's age is 20 years, then what is the sum of the ages of A, B and C?

There is a group of 5 men , 6 women and 8 children . 1 man, 1 woman and one child are going to be selected to...

12 students working for 5 hours a day can solve a certain number of problems in 8 days. How many students are...

If the ratio of simple interest and principal is 8 : 25 and rate of interest is equal to the time invested the...

A seller marks his goods 30% above their cost price but allows 15% discount for cash payment . His percentage...

A ladder is placed against a wall such that its foot is at a distance of 2.5 m from the and its top reaches a...

If