Question

I would like to know how to solve question 8 please.

Answer 1

Step 1:

The question involved direct proportion, meaning, if one quantity increases, the other increases, and when one decreases, the other also decreases.

Step 2:

Let the number of pages = n

Let time = t

Step 3:

For direct proportion, you will divide.

`\begin{gathered} (n_1)/(t_1)\text{ = }(n_2)/(t_2) \\ n_1\text{ = }20 \\ t_1\text{ = 15} \\ n_2\text{ = ?} \\ t_2\text{ = 25} \end{gathered}`

Step 2:

Substitute the values

`\begin{gathered} (20)/(15)\text{ = }(n)/(25) \\ \text{Cross multiply} \\ 15n\text{ = 500} \\ n\text{ = }(500)/(15) \\ \text{n = 33}(1)/(3)\text{ pages.} \end{gathered}`

Final answer

`She\text{ will read 33}(1)/(3)\text{ pages in 25 minutes}`