Question

A family swimming pool membership costs $55 per month plus a one-time registration fee of $25. If a family has paid a total of $465, how many months have they been members?

Answer 1

total = 465
total without registration fee = 465 - 25
= 440
55 = 1 month
440 = 1 ÷ 55 x 440
= 8 months

They have been members for 8 months.