Question

A train travels at a speed 50 km/hr for 0.5 hr, at 30
km/hr for next 0.26 hr and then 70 km/hr for next
0.76 hr. What is the average speed of the train?​

Answer 1

Step-by-step explanation:

v 1=50kmph

t1 =0.5hr

d 1=50×0.5=25km

v 1=30kmph

t 1=0.26hr

d 1=30×0.26=7.8km

v 1=70kmph

t 1 =0.76hr

d 1=70×0.76=53.2km

Average speed will be,

V= Average speed will be,

V= d1+d2+d3/t1+t2+t3

V= 25+7.8+53.2/

0.5+0.26+0.76

V= 86/1.52

V=56.57kmph

Answer 2

Answer:

Average speed =98.6km/hr

Step-by-step explanation:

Average speed=50+30+70/0.5+0.76+0.26

=150/1.52

=15000/152

=98.6km/hr

I hope the answer will help you mate

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