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16 November, 19:46

A 6th grade student can complete 20 multiplication facts in 1 minute. If he works at the same rate, how long should it take him to complete 35 multiplication facts? [Type your answer as a decimal number.]

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  1. 16 November, 20:07
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    The key concept you must have to remember is that, the rate is kept constant, as what is specified in the problem. Our basis for the rate is the first situation.

    Rate = 20 facts / 1 min.

    Let's equate this to the second situation using x as the time unknown.

    20/1 = 35/x

    Solving for x,

    x = 1.75 minutes
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