Question

An aeroplane covers 1020 km in an hour. How much distance will it cover in $4\frac{1}{6}$ hours?

Answer 1

Distance covered by the aeroplane in $4\frac{1}{6}$ hours = $4\frac{1}{6}\times 1020$
$$\begin{gathered} =\left(4+\frac{1}{6}\right)\times 1020 \\ =\frac{25}{6}\times 1020 \\ =\frac{25}{6}\times \frac{1020}{1} \\ =\frac{25\times 1020}{6\times 1} \\ =\frac{25500}{6} \\ =4250\mathrm{km} \end{gathered}$$

Therefore, the distance covered by the aeroplane is $4250\mathrm{km}$.