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14 May, 10:20

Gina visited the aquarium with some of her cousins, aunts, and uncles. The group bought 20 admission tickets for $340. Adult tickets cost $20, and children's tickets cost $15. How many adult tickets and how many children tickets did the group buy?

Write a system of equations. Then, solve the system algebraically.

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  1. 14 May, 10:46
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    Step-by-step explanation:

    20 a+5c=340

    a+c=20

    c=20-a

    20 a+5 (20-a) = 340

    20a+100-5a=340

    15a=240

    a=16

    a=20-16=4

    16 adult tickets

    4 children tickets.
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