91.7k views
4 votes
9. Jennifer is now 3 years older than Peter. If, in 12 years, the sum of their ages will be 61, how

old is Jennifer now?

1 Answer

3 votes

Answer:

20

Explanation:

In 12 years, the sum of their ages will be 24 more than it is now. The sum of their ages now is 61-24 = 37.

If Jennifer is 3 years older than Peter, we have ...

j + (j -3) = 37

2j = 40 . . . . . . add 3

j = 20 . . . . . . . divide by 2

Jennifer is now 20 years old.

_____

Peter is now 17 years old. In 12 years, they will be 29 and 32, so their ages will sum to 61.

User MorganIsBatman
by
8.2k points

No related questions found