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March 29, 2017

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If 28% of a sum is $100.80, what is the sum?

A. $129.02
B. $277.78

C. $282.24

D. $360.00
how can i do this

  • math - ,

    Change 28% to a decimal. Let x = the sum.

    0.28x = 100.8
    x = 100.8/0.28
    x = ?

  • math - ,

    i got the answer it's D thanks
    how did you figure out which operation to use.

  • math - ,

    I thought -- 28% of what is 100.80? -- and then put it in algebraic terms.

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