1.

A bus travelling at 42 km/h covers a distance in 5 h . How much time would it save if it increased its speed by 8km/h ?

Answer» 42 km/h then it will travel in 5 hour = 210 km
if speed increases then = 50 km/h
it will TAKE time in 210 km = 210/50 = 4.2 hour
then it will SAVE time = 48 MIN


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