Question

The average age is 27 yr of a b c ratio of their age is 2:3:4 then th difference between a and b

Answer 1

Answer: 3

Step-by-step explanation:

Let the ages of a, b, c be 2x, 3x and 4x.

Average of their ages = (2x + 3x+ 4x)/3

= 9x/3= 3x

But the average age is 27 (given).

So, 3x = 27 and x = 27/3= 9

Then the ages of a, b, c are 2 x 3, 3x3, 4x3. = 6, 9, 12.

The difference between a and b = 9-6= 3