Question

Mary and Marsha have a combined age of 36. Marsha is twice as old as Mary. How old is Mary?

Answer 1

2x + x = 36

Answer 2

2x + x = 3x

Answer 3

well start with what you know. Make Mary=x. Now you can have marsha=2x (twice the age of mary). Then set x+2x=36 (because it is the combined age of both of them). Solve for x and that gives you the age of Mary. If you wanted to know Marsha's, just double it.

Answer 4

3x = 36
divide 36/3
@Caitlyn_Morgan

Answer 5

Thank you both! ^-^

Answer 6

what did you get?

Answer 7

I got 12

Answer 8

ok correct

Answer 9

Ur welcome :)