SOLUTION: Two bike riders, Jeff and Nancy, are 25 miles apart, riding toward each other at 10 miles per hour and 15 miles per hour respectively. A fly starts from Jeff and flies to Nancy and

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Question 584858: Two bike riders, Jeff and Nancy, are 25 miles apart, riding toward each other at 10 miles per hour and 15 miles per hour respectively. A fly starts from Jeff and flies to Nancy and then back to Jeff and so on. The fly continues back and forth at a rate of 40 miles per hour until the bike riders "collide" and crush the fly. How far has the fly traveled?

Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
the riders are closing the distance at 25 mph (10 + 15), so it takes them one hr to "collide"

the fly is moving at 40 mph, in one hr it travels 40 mi