SOLUTION: Jesse rode his bike for 2 hours at a constant rate. During the first 1.5 hours, he rode 21 miles. How many miles did Jesse ride his bike during the last half hour?

Question 1165244: Jesse rode his bike for 2 hours at a constant rate. During the first 1.5 hours, he rode 21 miles. How many miles did Jesse ride his bike during the last half hour?
Found 2 solutions by greenestamps, josgarithmetic:
Answer by greenestamps(13200) (Show Source): You can put this solution on YOUR website!

Half an hour is one-third as much time as 1.5 hours. Since his rate was constant, the distance he rode in the last half hour was one-third the distance he rode in the first 1.5 hours.

You can do the simple arithmetic....

Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
21 miles per 1.5 hours

For ANY half-hour period of his bike ride, 7 miles
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