Question

A bus travelling at 42 km per hour covers the distance in 5 hours . how much time would it save if it increased its speed by 8 km per hour?

Answer 1

distance 42×5=210
if bus travel 42+8 =50 km per hour
then bus covered the distance 210/50= 4hrs 20 min
it would save 5hrs-4hrs 20 min= 40mins