a book normally costs $21.50. today it was on sale for 15.05. what percentage discount was offered during the sale?

Question

a book normally costs $21.50. today it was on sale for 15.05. what percentage discount was offered during the sale?

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    2021-09-06T10:41:42+00:00

    To find the discount %, we must use the equation below.

    Discounted Price / Original Price = 1 – Discount %

    15.05 / 21.5 = 1 – Discount %

    Subtract 15.05 / 21.5 from both sides and add Discount % to both sides to get the following equation.

    Discount % = 1 – 15.05 / 21.5 = 1 – 0.7 = 0.3 = 30% discounted

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