10
algebra

A discount of 20% reduced the price of a shirt by $10. What was the original price?

A

100

B

40

C

20

D

50

Correct Answer: D

Choice Ahoice C is the correct answer.

  1. Equation: 0.20x=100.20x = 10
  2. Divide by 0.20: x=50x = 50
  3. Verify: 0.20(50)=100.20(50) = 10 ✓

Choice Ahoice C is incorrect because calculation error.

Choice Ahoice D is incorrect because calculation error.

Choice Ahoice B is incorrect because calculation error.

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Linear Functions Set 23