Dina and Masha started out on a 12 mi bike path at the same time. When Dina reached the end of the 12 mi, Masha still had 3 mi left to bike. If Dina’s biking speed is 8 mph, find Masha’s biking speed.

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  1. Dina took 12/8 = 3/2 hrs
    So, if Masha's speed was x
    3/2 x = 12-3
    x = 6 mi/hr

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  2. x=6 mph

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