Question

A gym holds one 60-minute exercise class on Saturdays and several 45-minute classes during the week. Last week all of the classes lasted a total of 285 minutes. Write an equation you can use to find the number of weekday classes.

Answer 1

45(6)+15= 285 not counting the 60?

Answer 2

Use x for the number of 60-minute classes and y for the number of 45-minute classes. The equation would be

60x+45y=258

because both classes have a sum of 258 when they are combined.