Physics, asked by kasparpanmei3608, 11 months ago

A train goes 450 km at a speed of 90 km/hr. And returns at a speed of 75 km/hr. What is its average speed for the whole journey

Answers

Answered by aadiahwanit

0

Avg speed=

(a+b)/2

=(90+75)/2

=165/2

=82.5km/h

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