Question

The present ages of Junaid and his sister Shamin are in the ratio 1.3 Eight years from now, their ages will be in the ratio 5:7 What is the present age of Shamin?​

Answer 1

Answer:

6 year old

Step-by-step explanation:

Junaid = x

Shamin = 3x

ages in fraction= x/3x

after 8 years = 5x/7x

(x+8)/(3x+8)=5x/7x

(x+8)7x =(3x+8)5x

7x^2 + 56x = 15x^2 +  40x

8x^2 = 16x

8x= 16

x= 2

Junaid = x = 2

Shamin = 3x= 3*2=6 year old