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25 January, 08:16

Ernesto and his family have just finished dinner at a restaurant in a region where the meal tax is 6% of the price of the meal. Ernesto leaves an 18% tip. With tax and tip the total cost is $72.39.

A) write the equation that models this situation

B) use your equation to find the price of the meal without tax or tip

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  1. 25 January, 08:40
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    A) let P be the price of the meal before tax and tip. tax is. 06P, so the total for the meal and tax is 1.06P The tip is. 18P. so the total he spent

    72.39=1.06P+.18P = 1.24P

    B) 1.24P=72.39

    P=72.39/1.24

    P=58.38 with some tiny rounding error
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