Question

. A motorist travels 160 km at 90 km/hr and 160 km at 108 km/hr. What is the average speed of the motorist for his trip? 

98.18 m/s

72.16 m/s

27.27 m/s

None of these
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Answer 1

Answer:

None of these

Explanation:

Total distance traveled = 160000 + 160000

= 320000

Total time taken = 90 * 5/18 + 108 * 5/18

= 25 + 30

= 55

Average speed = Total distance traveled/Total time taken

Average speed= 320000/55

Average speed= 5818.18m/s

Answer 2

Answer:

21 km /h

Explanation:

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