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Mathematics, 26.01.2022 14:00 NANA2007

Jacob bought some tickets to see his favorite singer. he bought some adult tickets and some children's tickets. for a total of 9 tickets. The adult's tickets cost 10$ per ticket and the children's tickets cost 8$ per ticket. if he spent a total of $76, then how many adults and children tickets did he buy a + c =9
10a + 8c = 76

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