Jacob is 18years old. He is 2 times as old as his brother. How old will Jacob be when he is twice as old? Choose the most appropriate option:
A) 36
B) 38
C) 33
D) 32
E) 38

Rationale: j = 18 ; j = 2 b ; b = 18 / 2 = 9 ; twice as old so b = 9 ( now ) + ( 9 ) = 18 ; jacob is 18 + 18 = 36 answer : a
Answer: A