Asked by Tammy

Two cyclists depart from the same point. One travels due East at 18km/hr while the other travels North-West at 20km/hr. How long will it be before they are 80km apart?
Answered by bobpursley
80^2=t^2(20^2+18^2)

solve for time t.
Answered by Tammy
Wonderful, thank you
Answered by Anonymous
Two cyclists leave a park and ride in opposite directions, one averaging 5 mph and the other 10 mph. If they have two-way radios with a 10-mile range, for how many minutes will they remain in radio contact?
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