Sunday

April 20, 2014

April 20, 2014

Posted by **Diana** on Saturday, July 14, 2007 at 9:50pm.

Time in each case is the same.

distance=rate*time

20=(9+vf)*time

where vf is the velocity on the freeway.

15=vt*time or time= 15/vf

put that in the first equation for time, and solve for vf. You will most likely have a quadratic equation.

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