If Kiri has 17 part-time members this month, how many full time members does she need according to your equation?

Question

Kiri owns a coworking space that has two primary types of memberships, full time and part-time. In order to pay her bills each month (rent on the building, electricity, internet, and so on) she needs to make . Full-time memberships () cost  per month, and part-time memberships () cost  per month.

Answer 1

You're going to need a bit more information to completely solve this problem, but this is how you do it.

You have 2 types of memberships: full-time and part-time.

For each type of membership, you have 2 pieces of information: the number of people in that type and the amount of money they pay per month.

So, to find your monthly income, you simply need to multiply and add:

(# FT members) * ($ per FT member) + (# PT members) * ($ per PT member) = Total $ per month

Now, the problem indicates you have 17 PT members, but none of the other pieces have been indicated (they are given as () in the question, and you need a number there). So at this point, you have :

(# FT members) * ($ per FT member) + (17) * ($ per PT member) = Total $ per month

The question indicates that you should be solving for the number of FT memberships needed to pay the monthly bills. So, if you fill in numbers for Total $ per month (which should be monthly costs - rent, bills, etc.) and the cost of FT and PT memberships, you can solve for the only remaining variable.