Question

When James went to the dentist office, the nurse gave him a boxof dental floss. It had 16 yards of floss in it. He was told to use 4inches of it every day. How many days will the floss last?

Answer 1

since James has to use 4 inches of dental floss every day and he has a box with 16 yards, then, converting the 16 yards to inches we have the following:

`\begin{gathered} 1yd=36in \\ \Rightarrow16yd=16(36)=576in \end{gathered}`

now we can divide the total inches by the 4 inches that James has to use every day:

`(576)/(4)=144`

therefore, the box of dental floss should last 144 days