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breexj
21.07.2019 •
Mathematics
Adult tickets for the school musical sold for 3.50 and student tickets sold for 2.50. three hundred twenty one tickets were sold altogether for 937.50. how many of each kind of ticket were sold?
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Ответ:
Let s represent student tickets
3.50 a + 2.50 s = $937.50 eqation 1
three hundred twenty one tickets were sold altogether
a + s = 321 equation 2
s= 321 - a
we replace it in equation 1 so
3.50a + 2.50s = 937.50
3.50a + 2.50(321-a)=937.50
3.50a+802.5-2.50a=937.50
3.50a-2.50a+802.5=937.50
1.00a+802.5=937.50
a=135
and s=321-135= =186
Ответ:
Step-by-step explanation:
what is your number? you gave 3 options but not any explanation about your number