Question

One movie club charges a $100 membership fee and $10 for each movie. Another club charges no membership fee but movies cost $15 each. How many movies would you have to buy for the cost of each movie to be the same?

Answer 1

So movie club one:

Cost = 100+10n, where n is the number of movies

Club 2:

Cost = 15n

So when they are equal:

100 + 10n = 15n
100 = 5n
n = 100/5

n = 20