Question

A train covers first 140 km in 2 hours, next 180 km in 3 hours and the last 40 km in 1 hour. Find the average speed of the train.

Answer 1

$Averagespeed$ = $\frac{\text{Total distance}}{\text{Total time taken}}$

Now, total distance travelled = 140 + 180 + 40 km

= 360 km

and total time taken = 2 + 3 + 1 hours

= 6 h

$\therefore$ $Averagespeedoftrain$ = $\frac{360}{6}$

= 60 $\frac{km}{h}$