a bicyclist started riding at 8 am and at 4.5 miles to 8;18 am to 7.5 miles to 8;48 am what was the bicylists rate of speed in mph

3 answers

8 am at 0
8:18 at 4.5
8:48 at 7.5 miles ???

18 min = .3 hour
48 min = .8 hour

in first .3 hours speed = 4.5/.3 = 15 mph

in next .5 hours = speed = 3/.5 = 6 mph

average speed for the whole trip = 7.5 miles/.8 hours = 9.375 mph

Thank you so much!

lit hw is done

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