Jenny is 34 years old Two years ago she was twice as old as

Jenny is 34 years old. Two years ago she was twice as old as her cousin. How old is her cousin now?

A. 15

B. 17

C. 18

D. 21

Solution

D. Set this up as an equation. A number plus 2 times that number is 300.

x + 2x = 300

Solve for x.

3X=300

X=100

So one number is 100 and the other is twice that, or 200.