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By dividing the cost of coffee from Starbucks which is $4.00 by the cost of the k-cups .73 cents, you will get .1825. Then covert to a percentage to get 18% .
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.73 cents is 18% of the $4.00 Jake was spending.When you subtract 18% from 100%, you will get a total of 82% savings.
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Convert 82%to a decimal by moving the decimal point 2 places to the left and multiply $4.00 x .82 which eaquals $3.28.
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