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December 19, 2014

December 19, 2014

Posted by **alejandro** on Monday, February 18, 2013 at 2:03pm.

- algebra -
**Steve**, Monday, February 18, 2013 at 4:30pmThe speed difference is 2 mph

The time it takes to run an extra 1/4 mile is thus 1/8 hour

check:

In 1/8 hour M runs 14/8 = 7/4 mi

J runs 16/8 = 2 mi, or one extra lap

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