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At the movie theater, child admission is $5.10 and adult admission is $8.70 on Sunday, 138 tickets were sold for a total sales of $995.40 how many adults tickets were sold that day
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At the movie theater, child admission is $5.10 and adult admission is $8.70 on Sunday, 138 tickets were sold for a total sales of $995.40 how many adults tickets were sold that day

User Jfmatt
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1 Answer

3 votes
c + a = 138.....c = 138 - a
5.10c + 8.70a = 995.40

5.10(138 - a) + 8.70a = 995.40
703.80 - 5.10a + 8.70a = 995.40
-5.10a + 8.70a = 995.40 - 703.80
3.60a = 291.60
a = 291.60/3.60
a = 81 <===
User Gareth Farrington
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