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What single discount is equivalent to successive discounts of 10% and 20%
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What single discount is equivalent to successive discounts of 10% and 20%

User Giliweed
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10% discount on 100 is 90.
20% discount on 90 is 72.

100-72=28

Answer = 28%
User Mike Valenty
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9/10 divided by (1/10 plus 2/5)
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