Solving a decimal word problem

Question

Chau is going to rent a truck for one day. There are two companies he can choose from, and they have the following prices.

Company A charges $94 and allows unlimited mileage.

Company B has an initial fee of $55 and charges an additional $0.60 for every mile driven.

For what mileages will Company A charge less than Company B?

Use m for the number of miles driven, and solve your inequality for m.

Answer 1

94 = 55 + 0.6 m

39 = 0.6m

390 = 6m

390/6 = m

65 =m

so if m<65, plan B is cheaper