
Sarah S. answered 11/29/14
Tutor
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Fun and Patient Elementary - Secondary Tutor
The question may be answered easily by first determining how far we would ride the bike in 1 hour. Riding the bike 12 mph (miles per hour) for one hour, we would ride the bike 12 miles.
Since 20 minutes is 1/3 of a hour, divide 12 by 3 to find out how far the biker traveled in 1/3 of the time: 4 miles.
Villine M.
Jean runs 10 mi and then rides 4 mi on her bicycle in a biathlon. She rides 8 mph faster than she runs. If the total time for her to complete the race is , determines her speed running and her speed riding her bicycle.07/10/19