Question

To skate at Roller Heaven, each person must pay a membership fee (m) and a fee for each session (f). Art attended 5 sessions and paid $25 in all. Later, when he had attended 10 sessions, he paid $40 in all. How much is the membership fee and how much are the sessions.
Write the solution as an ordered pair.

Answer 1

25 = m + 5f
40 = m +10f

-40 = -m - 10f
25 = m + 5f

15 = 5f
f = 3

25 = m +15
m = 10