Math
posted by Jake
At the city museum, child admission is $5.40 and adult admission is $9.30. On Friday, 134 tickets were sold for a total of $957.60. How many adult tickets were sold that day?

Reiny
a + c = 134 > a = 134  c
5.4a + 9.3c = 957.6
54a + 93c = 9576
18a + 31c = 3192
sub in a = (134  c) and solve for a
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