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Two friends, Alejandro and Mia, agreed to split the check at a restaurant. Alejandro ordered $12 worth of food and Mia ordered $18 worth. At the end of the meal, Alejandro put his $12 contribution on the table, plus a 20% tip on his bill and Mia put her $18 contribution on the table, plus a 15% tip on her bill. The total tip left by Alejandro and Mia is equal to r% of the total check for their table, where the "total check" amount does not include the tip. What is r?

Guest Jun 18, 2017

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Two friends, Alejandro and Mia, agreed to split the check at a restaurant. Alejandro ordered $12 worth of food and Mia ordered $18 worth. At the end of the meal, Alejandro put his $12 contribution on the table, plus a 20% tip on his bill and Mia put her $18 contribution on the table, plus a 15% tip on her bill. The total tip left by Alejandro and Mia is equal to r% of the total check for their table, where the "total check" amount does not include the tip. What is r?

 

Alejandro's tip =$12 x 20% =$2.40

Mia's tip =$18 x 15% =$2.70

$2.40 + $2.70 = $5.10 Total amount of tips.

$12 + $18 =$30 Total food bill without the tips

r = $5.10 / $30 =0.17 x 100 = 17% Tips as a percentage of their food bill.

Guest Jun 18, 2017
edited by Guest  Jun 18, 2017
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 #1
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Best Answer

Two friends, Alejandro and Mia, agreed to split the check at a restaurant. Alejandro ordered $12 worth of food and Mia ordered $18 worth. At the end of the meal, Alejandro put his $12 contribution on the table, plus a 20% tip on his bill and Mia put her $18 contribution on the table, plus a 15% tip on her bill. The total tip left by Alejandro and Mia is equal to r% of the total check for their table, where the "total check" amount does not include the tip. What is r?

 

Alejandro's tip =$12 x 20% =$2.40

Mia's tip =$18 x 15% =$2.70

$2.40 + $2.70 = $5.10 Total amount of tips.

$12 + $18 =$30 Total food bill without the tips

r = $5.10 / $30 =0.17 x 100 = 17% Tips as a percentage of their food bill.

Guest Jun 18, 2017
edited by Guest  Jun 18, 2017

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