# Problem Solving

Sydnell buys a calculator that's on sale. He paid \$90 not including tax. if she had purchased the calculator while it wasn't on sale, he would have paid \$110 not including tax. What was the discount he received? Explain.

Thanks! (:

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2. 👎 0
3. 👁 67
1. 20/110, expressed as a percentage

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2. 👎 0
posted by drwls

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