Question

Currently, Sam's coach is twice as old as Sam. When Sam started soccer 10 years ago, his coach was four times his age. How old is Sam now?

Answer 1

Are you doing FLVS algebra 1? O.o

Answer 2

Let sam's coach's age be 2x
so sam's age is x

4(x - 10) = 2x - 10

Answer 3

let sam's age be x and his coach's age be y
y=2x
ten years ago sam's age is x-10
his coach's age is y-10
y-10=4(x-10)

y=2x putiing in above equation
2x-10=4x-40
-2x=-30
x=15
y=30
sam's age is 15

Answer 4

4x - 40 = 2x -10

2x = 30

x = 15

2x = 30