Question

An aeroplane takes 7 hours to travel from New Delhi to London. If the plane travels at a uniform speed of 950 kilometres per hour, find the distance between New Delhi and London.

Answer 1

The expression for the speed is given by
$$\begin{gathered} \mathrm{Speed}=\frac{\mathrm{Distance}}{\mathrm{Time}} \\ \mathrm{or}\mathrm{Distance}=\mathrm{Speed}\times \text{T}\mathrm{ime} \\ \mathrm{Speed}\mathrm{of}\mathrm{aeroplane}=950\mathrm{km}/\mathrm{h} \\ \mathrm{Time}\mathrm{taken}\mathrm{by}\mathrm{aeroplane}=7\mathrm{hours} \\ \mathrm{So}, \\ \mathrm{Distance}\mathrm{between}\mathrm{New}\mathrm{Delhi}\mathrm{and}\mathrm{London}=950\times 7=6650\mathrm{km} \end{gathered}$$