Question 817082
Mr. Gentz could ride his 10-speed bicycle 4.8 miles to his grandmothers' house in 11 minutes. His return trip home took 14 minutes. The times are different due to there being a slight downhill slope on part of the trip to his grandmothers' house. If Mr. Gentz was able to ride his bike on a perfectly flat surface with no hills, how fast can he travel in Miles/Hour?
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Insufficient info.
You can't assume it would be the average of the 2 speeds.