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Madelyn was out at a restaurant for dinner when the bill came. Her dinner came to $30. After adding in a tip, before tax, she paid $38. 40. Find the percent tip.

Respuesta :

Answer:

28%

Step-by-step explanation:

38.40 - 30 = 8.40


x : 100 = 8.40 : 30

x = 8.40 * 100 / 30

x = 840/30

x = 84/3 = 28%

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