Question

The quantities of milk deposited every month by a certain milkman at a collection centre are shown below. Find the average quantity of milk he deposited per month.

Month	Jan	Feb	Mar	Apr	May	Jun
Milk (litres)	83	79	81	85	73	61

Answer 1

Total quantity of milk deposited = 83 + 79 + 81 + 85 + 73 + 61 = 462
Total number of months = 6
Average quantity of milk deposited per month$=\frac{\mathrm{Total}\mathrm{quantity}\mathrm{of}\mathrm{milk}\mathrm{deposited}}{\mathrm{Total}\mathrm{number}\mathrm{of}\mathrm{months}}$
$$\begin{gathered} =\frac{462}{6}\mathrm{litres} \\ =77\mathrm{litres} \end{gathered}$$