Question

the present age of a and b are in the ratio 5:6 five year ago their age were in the ratio 4:5•find their present age?

Answer 1

Answer:

25 & 30 year

Step-by-step explanation:

As the ratio is 5:6, let the present age of a be 5x and that b be 6x.

Five year ago:

Age of a = pres. age - 5 = 5x - 5

Age of b = pres. age - 5 = 6x - 5

In question, that time, ratio is 4:5,

= > (5x - 5):(6x - 5) = 4:5

= > 5(5x - 5) = 4(6x - 5)

= > 25x - 25 = 24x - 20

= > 25x - 24x = 25 - 20

= > x = 5

So, present age of:

a = 5x = 5(5) = 25 year

b = 6x = 6(5) = 30 year