Question

A train travels at 60 km per hour for 0.52 hour at 30 km per hour for the tax 0.24 hour and at 70 km per hour for the next 0.71 over what is the average speed of the train

Answer 1

Average speed

=$\dfrac{V_{1} *t_{1} +V_{2}* t_{2} +V_{3}* t_{3} }{t_{1}+t_{2}+t_{3}}$

=$\dfrac{60 *0.52+30* 0.24 +70* 0.71 }{0.52+0.24+0.71}$

=59.932 km/hour