DD8156
14.10.2019 •
Mathematics
Your school sold 456 tickets for a high school play. an adult ticket cost $3.50. a student ticket cost $1. total to ket sales equaled $1131. find the number of each type of ticket sold.
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Ответ:
3.5a + s = 1131
3.5(456 - s) + s = 1131
1596 - 3.5s + s = 1131
-3.5s + s = 1131 - 1596
-2.5s = - 465
s = -465/-2.5
s = 186 < student tickets sold
a + s = 456
a + 186 = 456
a = 456 - 186
a = 270 < adult tickets sold
Ответ:
he made around $2150 before taxes this is because we know he had 200 subs the first month which is an income of 1000$ we then know 10 cancel 40 join. this means he has 230 people on his site. which 230 times 5 equals $1150. adding these both up we get $2150