A train went 300 km from City to city at an average speed of 100 km/h. At what speed did it travel on the way back if/his its average speed for the whole trip was 120 km/h
Created: 5 years ago |
Updated: 3 years ago
best des
Let,
Way back speed = x
ATQ,
2×x×100/(x + 100) = 120
Or, 200x/(x + 100) = 120
Or, 200x = 120x + 12000
Or, 80x = 12000
Or, x = 150
Md Azizur Rahman
Founder of Satt
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