Question

Harvey is 3 times as old as Jane. The sum of their ages is 48 years. What are both their ages.

Answer 1

H+j= 48
3j+j=48
4j=48
J=48/4
Jane is 12 years old
and Harvey is 36 years old

Answer 2

Simple....

write into an equation...

3x+x=48

4x=48

x=12

See if it's true...

3*12=36

12

36+12=48

You know it's true...

Thus, your answer.