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Question 921441: An athlete covers a total distance of 32km frpm point C to point S. First he walks at a speed of 6km/hr to point G. He finally runs at a speed, which is three times as fast as before, for 12km from point G to S.
1.Calculate the total time in hours taken to complete journey CS.
I worked out the time it took from CG using simple proportion and it came to 3.33. Do I have to change it to hours and minutes or is it correct as it is?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! An athlete covers a total distance of 32km frpm point C to point S.
First he walks at a speed of 6km/hr to point G.
He finally runs at a speed, which is three times as fast as before, for 12km from point G to S.
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1st part DATA:
rate = 6 km/hr ; distance = 32-12 = 20 km ; time = 20/6 hr = 3 1/3 hr
2nd part DATA:
rate = 18 km/hr; distance = 12 km ; time = 12/18 = 2/3 hr
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1.Calculate the total time in hours taken to complete journey CS.
Total time = 3 1/3 + 2/3 = 4 hrs
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Cheers,
Stan H.
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