Question

a bus travelling 42 kilometre per hour covers the distance in 5 hours how much time would it safe if it increases its speed by 8 km per hour​

Answer 1

Answer:

speed=42kmph time = 5hours distance =? speed=distance/time so, distance = 42*5=210km

Answer 2

Answer:

45 mins

Step-by-step explanation:

original speed=42kmph

time=5 hours

Thus, distance =time×speed

=5×42=210 km

If the speed is increased by 8kmph, then the speed =42+8=50kmph

Distance = 210 km

So time =distance/speed=210/50

=4.25 hours

So, time saved=5-4.25=0.75 hours

=45 mins

Hope it helps!!!

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