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July 7, 2015

Homework Help: math

Posted by hemant mishra on Monday, June 25, 2012 at 2:04pm.

Jack and Jill run 10 kilometers. They start at the same point,
run 5 kilometers up a hill, and return to the starting point by the same route. Jack has
a 10-minute head start and runs at a rate of 15 km/hr uphill and 20 km/hr downhill.
Jill runs 16 km/hr uphill and 22 km/hr downhill. How far from the top of the hill are
they when they pass going in opposite directions?
(A)
5
4
km (B)
35
27
km (C)
27
20
km (D)
7
3
km (E)
28
9
km

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