Question

Max bought two items that were both on sale. One item was 10% off and one item was 20% off. Max says that he saved 15% altogether. Is he correct?
Question 1 options:

Yes


No

Question 2 (10 points)
Explain to Max how you can determine the answer.

Is Max correct? Why or why not? How did you reach your conclusion?

Your response should include mathematical evidence that supports your conclusion, like an example with numbers.

Answer 1

Max is correct when he says he saved 15% altogether

Let assume that each item costs $100

With a 10% discount, he would pay $90

With a 20% discount, he would pay $80

The total amount he bought the items with the discount = $90 + $80 = $170

Without the discount, he would have paid = $100 + $100 = $200

Amount saved = $200 - $170 = $30

Percentage savings = $\frac{30}{200}$ x 100 = 15%

Max saved 15% in total

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