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29-10-2020
Mathematics

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Shirts are on sale for 20%.You buy 2 of them. As you pay, the cashier says, “20% off of each shirt means 40%off the total price.” Do you agree or disagree? Please explain thoroughly.

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MathPhys MathPhys

29-10-2020

Step-by-step explanation:

Disagree.

If each shirt is originally x dollars, then the new price is 0.8x. So the total cost is 1.6x, down from the original 2x.

So the discount is (2x − 1.6x) / 2x × 100% = 20%.

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