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A motorist travelled 1/2 of his journey at 60km/h and completed the remaining 90km in 3/2 hours. What was his average speed for the whole journey?

Asked by hemanta3651 27th December 2018, 1:15 PM
Answered by Expert
Answer:
Acccording to the question,
Half journey travelled at 60km/h
Remaining journey = 1 - 1/2 = 1/2 = 90 km
Hence, total journey is 180 km.
speed = distance/time
speed for the remaining journey = 90/1.5 = 60 km/hr
Hence, as the speed is same for the first half journey and the remaining journey average speed for the whole journey is 60 km/hr.
Answered by Expert 27th December 2018, 3:14 PM
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