Question

Six years ago, the ratio of the ages of kunal and sagar was 6 : 5. four years hence, the ratio of their ages will be 11 : 10. what is sagar's age at present?

a. 16 years

b. 18 years

c. 20 years

d. cannot be determined

e. none of these

Answer 1

x-6/y-6=6/5,x+4/y+4=11/10,
Y=16 year

Answer 2

Hey sup!

Let Kunal and Sagar's age six years ago be 6k and 5k respectively.
Present age of Kunal= 6k+6.
Present age of Sagar=5k+6.

Four year hence,
Kunal's age= 6k+6+4=6k+10.
Sagar's age=5k+6+4=5k+10.

As per the question,
6k+10/5k+10=11/10.
=>11(5k+10)=10(6k+10).
=>55k+110=60k+100.
=>60k-55k=110-100.
=>5k=10.
=>k=10/5.
=>k=2.

So, Sagar's present age=5k+6.
=5*2+6.
=10+6.
=16years= Option A.

Hope it helps.