please help!!

Question

(a) At Davidson's Bike Rentals, it costs $24 to rent a bike for 5 hours. How many hours of bike use does a customer get per dollar?
(b) Jenny bought 15 pounds of flour for $8. How many pounds of flour did she get per dollar?

Answer 1

Think of this like a question such as "Mike had 20 marbles and needed to divvy them equally

between himself and his 3 brothers.  How many marbles did each brother get?"

Marbles per brother is Marbles/brother.... A division question.  20/4 = 5 marbles per brother.

The main cue is the word "per" which generally means division.

 

a)  We want hours per dollar or hr/$

     Basically this is just a division question...  (5 hrs)/($24) = .21 hours per dollar

 

b) Same basic thing:  pounds per dollar or  lbs/$

    15/8 = 1 7/8 pounds per dollar or 1.875 pounds per dollar