Question

Answer each part. If necessary, round your answers to the nearest hundredth.Х5 ?(a) Kevin bought 6 pounds of sugar for $3.How many pounds of sugar did he get per dollar? 2 pounds per dollar(b) At Hoffman's Bike Rentals, It costs $37 to rent a bike for 7 hours.How many hours of bike use does a customer get per dollar?hours per dollar

Answer 1

a)

We know that Kevin spent $3 for 6 pounds of sugar, this means that he can get:

`(6)/(3)=2`

Therefore, he can get 2 pounds of sugar per dollar.

b)

If we divide the cost given by the time we have that:

`(37)/(7)=5.29`

Hence, it means that an hour cost $5.29. Now, if we want to know the how much time we get for a dollar we use a rule of three:

`\begin{gathered} 5.29\rightarrow1 \\ 1\rightarrow x \end{gathered}`

then:

`\begin{gathered} x=(1\cdot1)/(5.29) \\ x=0.19 \end{gathered}`

Therefore, we get 0.19 hours per dollar (this is approximately 11 minutes)