Homework Help: math

Posted by Anonymous on Monday, September 12, 2011 at 6:46pm.

movie tickets cost $10 for adults and $8 for children. The total sales form 120 tickets was $1120. how many adult tickets were sold?

math - drwls, Monday, September 12, 2011 at 7:04pm
A + C = 120
10 A + 8 C = 1120

Solve that pair of equations for the two unknowns
C = 120 - A
10 A + 960 -8A = 1120
2A = 160
A = 80
C = 40

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