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3 September, 14:22

Mr. Pilot always rides his bicycle to work,

and he begins his ride at the same time every

day. If he averages 10 miles per hour, he

arrives at school 2 minutes late, but, if he

averages 15 miles per hour, he arrives 1

minute early. How many miles does Mr.

Pilot ride to work? Express your answer as a

lecimal to the nearest tenth.

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Answers (2)
  1. 3 September, 14:39
    0
    Answer:same, If he average speed is 10 miles per hour (1/6 miles per minute), he need 7+2=9 minute to arrive at work.

    9 * (1/6) = 3/2 miles=1.5 miles

    Step-by-step explanation: 10 miles per hours = 1/6 miles per minute

    15 miles per hours=1/4 miles per minute

    Now, assume he need x minute to rides his bicycle to work.

    if he averages 10 miles per hour, then he need (x+2) minute to arrives at work

    if he averages 15 miles per hour, then he need (x-1) minute to arrives at work

    distance equal velocity multiply by time. d=v*t

    distance did not change, so we can set up an equation like ...

    1/6 * (x+2) = 1/4 * (x-1)

    x+2=1.5 (x-1)

    x+2=1.5x-1.5

    0.5x=3.5

    x=7

    If if he average speed is 15 miles per hour (1/4 miles per minute), he need 7-1=6 minute to arrive at work

    6 * (1/4) = 3/2 miles=1.5 miles
  2. 3 September, 14:49
    0
    what's a lecimal?
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