## Melisa and jennifer threw a fiftieth how much is a 20% tip, Mathematics

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Melisa and Jennifer threw a fiftieth birthday party for their father at a local restaurant. While the bill came, Melisa added a 15% tip of \$42. Jennifer said in which the service was wonderful and they should leave a 20% tip instead. How much is a 20% tip?

To ?nd out 20%, add 5% to 15%. Since 15% is known to be \$42, 5% can be found through dividing \$42 by 3 (15% ÷ 3 = 5%); \$42 ÷ 3 = \$14. To ?nd out 20%, add the 5% (\$14) to the 15% (\$42); \$14 + \$42 = \$56; 20% is \$56.

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