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Algebra Difficulty 1.0 Junior Find the answer Canada

Karl had his salary reduced by $10\%$ . He was later promoted and his salary was increased by $10\%$ . If his original salary was \$20 000, what is his present salary?

(A) \$16 200 (B) \$19 800 (C) \$20 000 (D) \$20 500 (E) \$24 000

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Source: CEMC, University of Waterloo, licensed CC-BY-NC-4.0. Statement reproduced verbatim; metadata (topic, difficulty) added by this project. Solutions are the publisher's, linked not copied.