The total age of A and B is 18 years more than the total age of B and C. C is how many years younger than A.?	Select.
A) 16 B) 12 C) 15 D) 18 E) 10
(A+B)-(B-C)=18   A-C=18   Answer is 18
<result>D</result>
The total age of A and B is 18 years more than the total age of B and C. C is how many years younger than A.?