Question

Read the graph and fill in the following:

The average number of books sold in May, June and July is___

Answer 1

Given that,

Number of books sold in May$=700$

Number of books sold in June$=1000$

Number of books sold in July$=700$

Therefore,

$$\begin{gathered} Average=\frac{\mathrm{Sum}\mathrm{of}\mathrm{all}\mathrm{observations}}{\mathrm{Total}\mathrm{number}\mathrm{of}\mathrm{observations}} \\ =\frac{700+1000+700}{3} \\ =\frac{2400}{3} \\ =800 \end{gathered}$$
Hence, average number of books sold in May, June, and July is $800$.