Lily and Mackenzie collected some stamps. If Lily gave 4 stamps to Mackenzie, Mackenzie would have twice as many stamps as Lily. If Mackenzie gave 4 stamps to Lily, they would have the same number of stamps. How many stamps did each girl have?

Answer 1

L-4 = (1/2)(M+4)
M-4 = L+4

2 L - 8 = M + 4
L = M-8

2 (M-8) - 8 = M + 4
2 M - 24 = M + 4
M = 28
L= 20

Answer 2

Thanks so much!

Answer 3

You are welcome.