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11 July, 13:58

Diners frequently add a 15% tip when charging a meal to a credit card. What is the price of the meal without the tip if the amount charged is 13.80. How much was the tip

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  1. 11 July, 14:00
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    12

    Step-by-step explanation:

    In this question, it means that the price of 13.80 is inclusive of the tip. This means that the price is 115% of the normal price. Then we must ask ourselves, if the price of 13.80 is 115%, what is 100%?

    That is,

    13.80 = 115%

    ? = 100%

    We work it out as follows:

    (100/115) * 13.80

    = 12
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