Tim is now 16 years older than Donna. If in 4 years Tim will be twice as old as Donna, how old will Tim be in 11 years?  Choices.
A) 35
B) 37
C) 39
D) 41
E) 43
T=D+16 so D=T-16.   T+4=2(D+4).   T+4=2(T-16+4).   T+4=2T-24.   T=28.   In 11 years, Tim will be 39 years old.   The answer is 39.
<result>C</result>
Tim is now 16 years older than Donna. If in 4 years Tim will be twice as old as Donna, how old will Tim be in 11 years?