SOLUTION: I am supposed to write down an equation or system of equations that would help me determine how many cups of tea and how many cups of coffee were sold. The concessions stand at

Question 923349: I am supposed to write down an equation or system of equations that would help me determine how many cups of tea and how many cups of coffee were sold.
The concessions stand at the hockey tournament sold 92 beverages one Saturday. Their total revenue was $192. Coffee sells for $2.20 per cup; tea sells for $1.80 per cup.
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
x+y=92,
2.2*x+1.8*y=192
x=92-y
2.2*(92-y)+1.8*y=192
202.4-2.2y+1.8*y=192
-0.4*y=-10.4
y=26.0
x=92-y
x=66 coffees at $2.20 and y=26.0 teas at $1.80
check
66+26.0=92
2.2*x+1.8*y=192
2.2*66+1.8*26.0=192
145.2+46.8=192
192.0=192
ok
codetick

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