Question

becky is three years younger than carly. three years ago the sum of their ages was 27. finf their ages

Answer 1

Lets say Becky currently is x, so Carly is x+3.

3 years ago, Becky was x-3, and Carly was x.

x-3+x=27

2x=30

x=15

Becky is 15

Carly is 18