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22 May, 13:44

Suppose a certain item used to sell for 30 cents per pound, and you see that it's been marked up to 45 cents per pound. What is the percent increase?

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  1. 22 May, 16:30
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    50%

    Step-by-step explanation:

    45 cents is 15 cents more than 30 cents. The increase in cents is 15.

    15 is half of 30. Half is also 0.5, 1/2, or 50%. The increase is 50%.

    You can also answer this using the percent change formula.

    percent change = (new number - old number) / (old number) * 100%

    percent change = (45 - 30) / 30 * 100%

    percent change = 15/30 * 100%

    percent change = 0.5 * 100%

    percent change = 50%

    If the result is positive, it is a percent increase.

    If the result is negative, it is a percent decrease.
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