Math Age Question

Question

Ten years ago, James was twice the age of Ying. Now the age difference between James and Ying is two years. What is the sum of their ages now?

(A) 18

(B) 22

(C) 26

(D) 34

Answer 1

j=y+2

j-10=2(y-10)=2y-20

y+2-10= 2y-20

y=12= yin's age now

j= 14 now

sum = 26

10 years ago they were 2 and 4

4= twice 2