Car B starts at point X and moves clockwise around a circular track at a constant rate of 2 mph. Ten hours later, Car A leaves from point X and travels counter-clockwise around the same circular track at a constant rate of 3 mph. If the radius of the track is 10 miles, for how many hours will Car B have been traveling when the cars have passed each other for the first time and put another 12 miles between them (measured around the curve of the track)?
4(pi)- 1.6
4(pi)+ 8.4
4(pi)+ 10.4
2(pi)- 1.6
2(pi)- 0.8
4(pi)- 1.6
4(pi)+ 8.4
4(pi)+ 10.4
2(pi)- 1.6
2(pi)- 0.8
Last edited by GmatKiss on Fri Oct 21, 2011 3:35 am, edited 1 time in total.
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