A. 14 years
B. 15 years
C. 16 years
D. 17 years
Let us assume, Six year ago, Kunal's age as 6x and Sagar's age as 5x
Current age of Kunal is 6x+6 and of Sagar is 5x+6
After four years their ages will be in 11 : 10 ratios
( 6x + 6 + 4 ) : ( 5x + 6 + 4 ) = 11 : 10
=> 10 ( 6x + 6 + 4 ) = 11 ( 5x + 6 + 4 )
=> x = 2
=> Sagar's present age = ( 5x + 6 ) = 16 years