Question

Xavier is x years old and Yvonne is y years old. Yvonne is 7 years older than Xavier. Four times Yvonne’s age is equal to 200.

(a) Write an equation that could be used to solve for Yvonne’s age, y.

(b) How old is Yvonne? Show your work!

(c) How old is Xavier? Show your work!

Answer 1

A) y=x+7
B) y=200/4=50
C) y=x+7 and we know that y=50 so we have 50 = x+7 which can be changed to x=50-7=43