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Sean and Darryl are racing on a track. Sean runs 6 miles per hour and gets a 0.25 mile head start. Darryl runs 0.7 mile per hour faster than Sean. If Darryl and Sean run the same distance, how many hours, x, do they run? 06x +0.25 -0.7x 6x -0.25 -3.7x O 6x +0.25 6.7x 6x0.25 4.7x

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Solution

For this case we know that distance is given by:

D= vt

We also know that the distance for Sean is equal to the distance of Darryl, then we can do this:

D Sean = D Darryl

And replacing we got:

6x+0.25 = 6.7x

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