Question

Wendy has a stamp collection of 8 cent stamps and 9 cent stamps. She has 2 less 9 cent stamps as 8 cent stamps. If the collection has a face value of 118 cents, how many of each does she have?

Answer 1

Let x = # of 8 cent stamps, and y = # of 9 cent stamps.
x = 2 + y
.08x + .09y = 1.18

Answer 2

now you can solve by substitution

Answer 3

thank you!!! now I understand where I made a mistake.