## If a : b = 20:5 then find out the value of (13a-9b): (11a-7b)?

If a : b = 20:5 then find out the value of (13a-9b): (11a-7b)?

## The sum of the present ages of a son and his father is 60 years. Six years ago, father’s age was five times the age of the son. After 6 years, what will be son’s age?

The sum of the present ages of a son and his father is 60 years. Six years ago, father’s age was five times the age of the son. After 6 years, what will be son’s age?

## A is two years older than B who is twice as old as C. The total of the ages of A, B and C is 27 . How old is B?

A is two years older than B who is twice as old as C. The total of the ages of A, B and C is 27 . How old is B?

## What is next number 1, 7, 17, 23, 33, ____?

What is next number 1, 7, 17, 23, 33, ____?

## The least number which should be added to 28523 so that the sum is exactly divisible by 3, 5, 7 and 8 is

The least number which should be added to 28523 so that the sum is exactly divisible by 3, 5, 7 and 8 is