SOLUTION: Two friends live 0.7 miles apart on the same road. If they walk toward each other at rates that differ by 1/2 mph and meet up 12 minutes later, how fast is each person walking?

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Question 835094: Two friends live 0.7 miles apart on the same road. If they walk toward each other at rates that differ by 1/2 mph and meet up 12 minutes later, how fast is each person walking?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
One walks r mph, and the other walks r+0.5 mph.
12 minutes = 1/6 hour.

Rate that they approach is r%2Br%2B0.5=2r%2B0.5 mph.

%282r%2B0.5%29%281%2F6%29=0.7 according to R%2AT=D;
2r%2B0.5=0.7%2A6
2r=0.7%2A6-0.5
2r=4.2-0.5
2r=3.8
highlight%28r=1.9%29 mph
The faster walker goes at highlight%282.4%29 mph