running at the average speed of 40 km hour a bus completes a journey in four and half hour how much time will return journey take if the speed increased to 45 km
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Answer:
4 hours
Step-by-step explanation:
Speed= distance /time
Distance= Speed × time
Distance= 40× 4+ 1/2
=. 40×9/2
= 180m
Now for the return journey the speed changes to 45km/hr
Speed = distance/time
Time = distance/speed
Time= 180 / 45
=. 4hours
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