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Mitchell is a big coffee fan, so he always takes care of coffee brewing at the office. Normally he uses 100 grams of Robusta coffee to prepare 10 cups of coffee. His friend brings him a packet of Arabica coffee and tells him that he should use 20 percent more than usual when brewing Arabica coffee. How many grams of coffee should he use to make a 15-cup pot of Arabica coffee?

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Answer:

180

Step-by-step explanation:

So first find how much gram he used for each cup 100 divided by 10=10

so he needs to add 20 percent more, so 20% of 10 = 2

10+2=12

12*15 = 180

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