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8 April, 17:15

Fiora starts riding her bike at 20 mi/h. after a while, she slows down to 12 mi/h, and maintains that speed for the rest of the trip. the whole trip of 70 mi takes her 4.5 h. for what distance did she travel at 20 mi/h?

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  1. 8 April, 17:59
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    d = r*t

    t = hours at 20 mi/hr

    20t + 12 * (4.5 - t) = 70

    8t = 16

    t = 2 hours

    d at 20 mi/hr = 20*2 = 40 miles

    40/20 + 30/12 = 4.5 hours

    Fiora travels a total distance of 4.5 hours
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