<PRE><B>Question 522890</B>
My little brother left 2 minutes ago on his bike to ride with his friends to the cemetery. If he pedals at 5 mph to the cemetery, which is 1 mile from here, and I go the back way (2.5 miles) so he doesn&#39;t see the car, how fast do I have to drive Mom&#39;s car to get there at least a full minute ahead of him so I can hide and scare him? 
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Brother DATA:
rate = 5 mph ; distance = 1 miles ; time = d/r = 1/5 = 12 minutes
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You DATA:
distance = 2.5 miles ; time = 11 minutes ; rate = d/t = 2.5/11 miles/min
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11 min = 11/60 hr = 0.1833 hr
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2.5/11 (miles/min) = 2.5/0.1833 = 13.64 miles/hr
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Cheers,
Stan H.
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