Question

The ratio of the present age of a and b is 5:4 and the ratio of their age after 4 years will be 11:9 then find the difference between the age of a and b.

Answer 1

Answer:

presentagesa,b. 5x, 4x

after 4 yrs, 5x+4 and 4x +4

5x +4/4x+4=11/9

45x+36=44x+44

x=44-36=8

x=8

5x=40

4x = 32

a=40yrs, b = 32 yrs

Answer 2

Answer:

As the ratio is 5:4 =

$\frac{11\times 4}{9\times 4} = \frac{44 \}{ 36 }$

AFTER 4 YEARS MEANS

44

36

hence 44:36