Running at an average speed of 40 km/hr, a bus completes a journey in 4.5 hours.How much time will the return journey take if the speed is increased to 45 km/hr
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Answer: 4 hrs
Step-by-step explanation:
Distance = 40 x 4.5
= 180 km
If s is increased to 45 km/h,
t = D/s = 180/45
= 4 hrs
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