fonsworth5
01.08.2019 •
Mathematics
William bought some tickets to see his favorite singer. he bought some adult tickets and some children tickets, for a total of 15 tickets. the adult's tickets cost $30 per ticket and the children's tickets cost $20 per ticket. if he spent $330 then how many adults and children's tickets did he buy? do it step by step
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Ответ:
Let 'a' stand for adult tickets and 'c' for children tickets.
a + c = 15
(Both adult and children tickets make up a total of 15 tickets).
30a + 20c = 330
a = 3
c = 12
A N S W E R:
William bought 3 adults tickets and 12 children's tickets.
Ответ: