Question

Three years ago, the ratio of ages of A and B was 7:1. After three years from now, the ratio of their ages will
be 4:1. What is the difference between their ages (in years) after seven years from now?​

Answer 1

Answer:

let the age of a and b is x years.

then after three year, 7x+3/x+3=4/1

=x=3

now after 7 years the ratio of the ages will be

Answer 2

Step-by-step explanation:

Ratio of the ages of A and B = 9:4

Let the age of A is 9x

Then age of B is 4x

Age of A three years back = 9x - 3

Age of B three years back = 4x - 3

Therefore (9x - 3):(4x -3) :: 3:1

So, (9x -3) = 3 (4x -3)

9x -3 = 12x -9

3x = 6 or. x =2

So present age of A = 18 and B = 8