Question

Alexandra is reading a book. Based on the table, how many pages will she read in 4 hours?
The given table shows the number of pages of a book Alexandra reads and the time she takes to read them. How many pages will she read in 4 hours at the same rate?

$$\begin{array}{ccccc}\text{Time (hours)}& 1& 2& 3& 4\\ \text{Page read}& 20& 40& & \end{array}$$

• A. 80
• B. 40
• C. 60
• D. 30

Answer 1

The correct option is A 80

Number of pages Alexandra reads in 1 h = 20
Number of pages she reads in 2 hours = 2 $\times$ 20 = 40
Following the same pattern:

$\begin{array}{ccccc}\text{Time (hours)}& 1& 2& 3& 4\\ \text{Page read}& 1\times 20=40& 2\times 40& 3\times 20=60& 4\times 20=80\end{array}$

So, the pattern is 20, 40, 60, 80.
Hence, Alexandra will read 80 pages in 4 h.