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1 January, 00:29

Erin rode her bike 30 miles in 120 minutes. She rode at a constant speed. How long did it take her to ride 20 miles?

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  1. 1 January, 00:47
    0
    80 minutes in 20 miles

    Step-by-step explanation:

    20 miles x 4 minutes = 80 minutes in 20 miles.
  2. 1 January, 00:56
    0
    First, you want to find how long in 1 mile. 120 : 30 = 4 minutes for 1 mile. Then, to find how long in 20 miles, you have to multiply

    20 miles x 4 minutes = 80 minutes in 20 miles. I hope this is √.

    √ = correct
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