Mathematics
Mathematics, 16.10.2021 21:00, nadia00738

Uncle Sam sells cups at a shop. For every cup he sells, he collects 20% of the price of the cup. For every 10 cups that he sells, he earns an extra 5% of the price of the cup. A cup is sold for $8. If he collects $86.80, how many cups does he sell?

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Uncle Sam sells cups at a shop. For every cup he sells, he collects 20% of the price of the cup. For...

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