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To work out the percentage of, for example, 21 correct answers out of 30 questions, do the following: 21 ÷ 30 × 100 = 70 (add the percentage sign, thus: 70%)

(If the answer had been 0.70, ignore the 0. and use 70 as the percentage.)

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โˆ™ 2013-05-09 15:49:17
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Q: What is the percentage is 21 out of 30?
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