the percent equation

1. find 30% 0f 70
2 what is 80% of 65
3 what percent of 56 is 14
4 36 is what percent of 40
5 80 is 40% of what number?
6 65% of what number is 78
7 what percent of 2000 is 6
8 12 is what percent of 4000
9 what percent of 3000 is 18
10 what is 110% of 80
11 find 180% of 160
12 4% if what number is 11

help please with any of these! :)

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  1. 1.
    0.23 * 70 = ?

    3.
    14 / 56 = ?

    5.
    0.4x = 80

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    Ms. Sue
  2. 1.
    Fine 30% of 70. The word of means multiply.
    0.30 x 70 = 21

    3. What percent of 56 is 14.
    We don't know percent so we call it y. Remembering that of means multiply, we have y*56=14
    solve for y. I get y = 14/56 = 0.25 as a decimal. You convert decimals to percents by multiplying by 100 (which is the same as moving the decimal to the right 2 places so 0.25 = 25%)

    I think these two methods will solve most of the problems.
    Check my work. I'm bad about typos.

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  3. 54 of 14

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  4. 25%

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  5. hat percent of 130 liters is 1.95 liters? find the percent using the percent equation

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  6. .....

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