Question

You can buy 50 rolls of toilet paper for $12.50. Write a ratio showing the unit rate of rolls per $1.

Answer 1

`(4R)/(1D)\Rightarrow\text{ 4 rolls per \$1}`

Step-by-step explanation: We need to find the unit rate or rate of rolls per $1:

`50\text{rolls }\Rightarrow\text{ 4=\$12.50}`

To find the number of rolls per one dollar we simply need to take the ratio of the two as follows:

`(50R)/(12.50D)\Rightarrow(1)`

Simplifying (1) gives the answer as follows:

`\begin{gathered} (50R)/(12.50D)=(4R)/(1D) \\ \end{gathered}`

The answer therefore is:

`\text{4 rolls per \$1}`