4. In a 1200 km journey, a man's driving speed was 60 km/h for the last 1/4 th of the journey. If he
completed his journey in 17 hours, find his driving speed for the first 3/4 th of the journey.
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Answered by
107
Answer:
1/4 of journey =300km
time taken in 1/4 journey =5hour
distance remain =900km
time left=12h
speed of remain journey =
speed = distance /time
900/12=75km/h
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37
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