Question

Xavier and Madeline’s age combined is 28. Xavier is 4 yrs older than half of Madeline’s age. How old will Xavier be in 2 yrs?

Answer 1

14 years old

Explanation:

let x= Xavier’s age

let y= Madeline’s age

Use linear function:

x+y=28

x=1/2y + 4

x+y=28

x-1/2y=4

Multiply 2nd equation by 2

x+y=28

2x-y=8

Add

3x=36

x=12

12+2=14

y=16