Estimate a 15% tip on a dinner bill of 31.51 by first rounding the bill amount to the nearest ten dollars.

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04-04-2020
Mathematics

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Estimate a 15% tip on a dinner bill of 31.51 by first rounding the bill amount to the nearest ten dollars.

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egrigg2010 egrigg2010 · Answer 1 · 2020-04-06T04:36:59+02:00

Answer: The estimated 15% tip would be $4.50.

Step-by-step explanation: Basically, first you will need to round the bill amount, $31.51 to the nearest ten dollars. 31.51 rounded to the nearest ten dollars is $30. Next, you will need to find the estimated tip amount. To do this multiply $30 by the tip 15%. Before you can find the tip amount, you will need to covert 15% to a decimal. To convert 15% to a decimal, divide 15 by 100 to get 0.15. Now, you can multiply 30 by 0.15 to get 4.50. So, $4.50 would be the tip if $31.51 was rounded to the nearest ten dollars.