Noah says that to find 20% of a number he divides the number by 5. For example, 20% of 60 is 12, because . Does Noah’s method always work? E

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Noah says that to find 20% of a number he divides the number by 5. For example, 20% of 60 is 12, because . Does Noah’s method always work? Explain why or why not.

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Bình An 3 years 2021-08-23T08:24:41+00:00 1 Answers 4 views 0

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  1. mocmien2
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    2021-08-23T08:25:52+00:00
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    Answer:

    Yes Noah’s method will always work

    Step-by-step explanation:

    Noah’s method states that:

    To find 20% of a number he divides the number by 5. For example, 20% of 60 is 12.

    Noah’s method will always work because:

    20% = 20/100

    Simplifying 20/100 to the least fraction = 20/100 = 1/5

    20% of x = 1/5 × x

    = x/5 = x ÷ 5

    Applying this to the examples

    20% of 60 = 1/5 × 60

    = 60/5 = 12.

    Therefore, Noah’s method will always work.

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