Question

pls answer the whole in detail
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Answer 1

Answer:

I think it will be helpful to you

Explanation:

The question should be corrected in the following way. …. How fast did the train travel for other 70km so as …….

If the above thing is implemented then we can proceed in the following way :

average time = total distance / average speed = 100 km / 40 km/h = 2.5 hr

for travelling 30 km train travelled with a speed of 30 km/h. So it took 1 hr.

So the remaining 70 km is travelled in 1.5 hr

therefore, train speed in the other 70km travel = distance / time = 70 km / 1.5 h

= 46.67 km/h