hollisjune3047
04.01.2020 •
Mathematics
Amovie theater sold 800 tickets and made $4400 in one night. if an adult ticket costs $8 and a children's ticket costs $4, how many adult tickets were sold?
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Ответ:
Let y = children's tickets
x + y = 800
8x + 4y = 4,400
From the first eq, x = 800 - y, plug this in to the second eq
8(800-y) + 4y = 4,400
6400 - 8y + 4y = 4,400
2000 = 4y
500 = y
x = 800 - 500
x = 300
300 adult tickets were sold.
Ответ: