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Percentages

SAT Math· difficulty 4/5

A price rises 1010\\% then drops 1010\\%. By what percent has the original price changed?

  • A

    0% (unchanged)

  • B

    2% decrease

  • C

    1% increase

  • D

    1% decrease

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Explanation

1.10cdot0.90=0.991.10 \\cdot 0.90 = 0.99, a 11\\% decrease.

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