Question

Q A train covers a distance at an average speed to 60 km/hr in 12 hours. What would be the speed of the tarin if the same distance is to be covered in 10 hours?

Answer 1

$$\begin{gathered} \mathrm{Hi}, \\ \mathrm{We}\mathrm{know}\mathrm{that}\mathrm{distance}=\mathrm{speed}\times \mathrm{time} \\ \mathrm{so}\mathrm{here}\mathrm{distance}\mathrm{covered}=60\times 12=720\mathrm{km} \\ \mathrm{Now}\mathrm{if}\mathrm{we}\mathrm{want}\mathrm{the}\mathrm{same}\mathrm{distance}\mathrm{to}\mathrm{be}\mathrm{travelled}\mathrm{in}10\mathrm{hour}\mathrm{then} \\ \mathrm{distance}=720\mathrm{km}\mathrm{and}\mathrm{time}=10\mathrm{hour} \\ \mathrm{so}\mathrm{speed}=\frac{\mathrm{distance}}{\mathrm{time}}=\frac{720}{10}=72\mathrm{kmph} \end{gathered}$$