Question

Tim is four years old. Janet is three times as old as Tim. When Tim turns twelve, how old will janet be?

Answer 1

4*3+(12-4)=20

Answer 2

Janet will be 20 years old. When Tim is four, Janet is three times older. 3 x 4 = 12, so when Tim is four, Janet is twelve. This means she is 8 years older than Tim. When Tim is 12, Janet will be 20 because 12+8=20.