Question

It took Sarah four days to write a paper she wrote 12 pages on day one 15 pages on day two and nine pages on day three if she wrote 12 pages per day how many pages did she write on a fourth day

Answer 1

We are given the number of questions Sarah wrote per day. Let's make the fourth-day x

First day =12 pages

Second day = 15 pages

Third day =9 pages

Fourth day = x pages

Since she wrote 12 pages per day, this implies the average of all the pages she wrote over the course of four days.

Here is the formula:

`\text{pages per day =}\frac{sum\text{ of pages}}{\text{total number of days}}`

Therefore,

`\begin{gathered} 12=(12+15+9+x)/(4) \\ 12=(36+x)/(4) \\ 12*4=36+x \\ 36+x=48 \\ x=48-36 \\ x=12 \end{gathered}`

ANSWER: OPTION A(12 Pages)