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17 February, 15:28

I dont understand what they refer to when they say what 128 is 74% of what number.

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  1. 17 February, 16:47
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    ==> 128 is 100% of 128.

    ==> 128 is 200% of 64.

    ==> 128 is 50% of 256.

    ==> 128 is 10% of 1,280.

    Now, what number is it 74% of?

    Here's how to find it:

    Call the mystery number ' M '.

    The question says that 128 is 74% of ' M '.

    You know that 74% means 0.74.

    And you know that in math, "of" usually means "times".

    So you can write the question as

    128 = 0.74 times M

    128 = 0.74 M

    Divide each side by 0.74 : 128 / 0.74 = M

    172.973 = M

    There's the mystery number. 128 is (about) 74% of 172.973.
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