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7 February, 07:31

Chad and Éric left a 20% tip after having lunch at a restaurant. the amount of the tip was $5. Chad's lunch cost $10. which equation can you use to find x, the cost of Eric's lunch?

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  1. 7 February, 07:39
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    (x + 10) *.2 = 5

    Step-by-step explanation:

    The total cost of lunch is Chad plus Éric; therefore, it is (x + 10).

    The total tip percent is 20; therefore, (x + 10) *.2 is equal to the tip amount: $5.
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