Question

It takes Leo 18 minutes to finish reading 4 pages of a book. How long does it take him to read 30 pages?

Answer 1

Given that Leo takes 18 minutes to read 4 pages of a book.

Then Leo's rate (r) of reading can be calculated as,

`\begin{gathered} Rate=\frac{\text{ Number of pages}}{\text{Time taken}} \\ r=(4)/(18) \end{gathered}`

So it is found that Leo's rate of reading is 4/18 pages per minute.

Then its reciprocal will give the time taken (t) by Leo to read a single page,

`\begin{gathered} t=(1)/(r) \\ t=(1)/(((4)/(18))) \\ t=(18)/(4) \\ t=4.5 \end{gathered}`

It means that Leo will take 4.5 minutes to read a single page.

Then the time taken by him to read