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18 February, 10:48

I'm using double number lines. Martin bought 3 DVDs for $15.00 on Black Friday. At this price, how much would 8 DVDs cost?

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  1. 18 February, 14:31
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    First of all, I find it easiest to write n equation.

    3 / 15 x 8 =

    Now that we have an equation, we can figure out a solution.

    3 / 15 = 5

    5 x 8 = 40

    So 8 DVD's would cost $40.00.
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