Amy, Jeremy, and Chris have a combined age of 132.  Amy is 1/3 the age of Jeremy, and Chris is twice as old as Amy.  How old is Jeremy?
Let x represent the age of Jeremy
Amy:(1/3)x
Chris:2(1/3)x=(2/3)x
Total:x+(1/3)x+(2/3)x=132
2x=132
x=66 years old
#### 66