Question

Compared to if she had bought no items on sale, by what percent was jan’s total grocery bill discounted? round to two decimal places. a. 15.85% b. 16.50% c. 16.65% d. 17.50%

Answer 1

The total percentage by which Jan's groceries were discounted is 16.65% approximately. (Option C). See the attached and the explanation below.

How was the total percentage discount arrived at?

Step 1 - Reverse engineer, the figures to get the original prices first.

• You can do this by dividing the discounted prices by the result that you get when you remove the decimal version of the discounted percentage from number one. For Chicken that would be 8.47/(1-0.85) = $9.96 (Original price.)

Step 2 - Sum up all the discounted prices as well as the Original prices then find the difference.

• This comes to 22.47 - 18.72 = $3.75

Step 3 - Divide the difference by the original price to get the percentage difference

$3.75/$22.47 = 16.68% (Nearest answer is Option C)

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