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28 October, 00:57

Leila, Scott, and Chau served a total of 90 orders Monday at the school cafeteria. Leila served 10 more orders than Scott. Chau served 2 times as many orders as Scott. How many orders did they each serve?

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  1. 28 October, 01:10
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    L + S + C = 90

    L = S + 10

    C = 2S

    S + 10 + S + 2S = 90

    4S + 10 = 90

    4S = 90 - 10

    4S = 80

    S = 80/4

    S = 20 < = = = Scott served 20

    L = S + 10

    L = 20 + 10

    L = 30 < = = Leila served 30

    C = 2S

    C = 2 (20)

    C = 40 < = = Chau served 40
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