Question

Q A family bought 5 litres of cooking oil on the first day of the month. If $1\frac{1}{4}$ litres of oil was left over at the end of month thus what was the family's consumption of cooking oil during the month.

Answer 1

$$\begin{gathered} \mathrm{Hi}, \\ \mathrm{Family}\mathrm{buys}5\mathrm{litres}\mathrm{and}\mathrm{left}\mathrm{over}\mathrm{is}1\frac{1}{4}\mathrm{or}\frac{5}{4}\mathrm{litres} \\ \mathrm{so}\mathrm{family}\text{'}\mathrm{s}\mathrm{consumption}\mathrm{of}\mathrm{oil}=5-\frac{5}{4}=\frac{20-5}{4}\mathrm{Litres} \\ =\frac{15}{4}\mathrm{Litres}=3\frac{3}{4}\mathrm{litres} \end{gathered}$$