In 6 years, A will be thrice as old as B was 4 years ago. If A is now 6 years older than B, find the present age of B. Pick one.
A) 16 years
B) 24 years
C) 8 years
D) 12 years
E) 18 years
let present age of A be A   let presennt age of B be B   in 6 yrs   A+6:B+6=3(B-4):B=6   ie A+6=3(B-4)   but given A=B+6   so B+6+6=3(B-4)   B=12   ANSWER:12 years
<result>D</result>
In 6 years, A will be thrice as old as B was 4 years ago. If A is now 6 years older than B, find the present age of B.