Question

Tom's age is four times that of his sister. When you add Kim's age to her brother's, you get 15. How old are Tom and Kim?

1 point for writing an equation

1 point for Tom's Age

1 point for Kim's Age

1 point for showing your work

Answer 1

Kim is 3, Tom is 12

Explanation:

4x + x = 15

combine like terms

5x = 15

divide both sides by five

x = 3