SOLUTION: a motorist travel 70km in 1hour 20minutes 55seconds. Round off to the nearest 1/4hour and find its speed in the rounded time

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Question 1183722: a motorist travel 70km in 1hour
20minutes 55seconds. Round off to the nearest 1/4hour and find its speed in the rounded time
Answer by ikleyn(52933) About Me  (Show Source):
You can put this solution on YOUR website!
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The rounded time is  1 hour and 15 minutes, or 1 and 1/4 of an hour, which is the same as 5%2F4 of an hour.



Using the rounded time, the average speed is  70%2F%28%285%2F4%29%29 = %2870%2A4%29%2F5 = 14*4 = 56 kilometers per hour = 56 km/h.    ANSWER


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