SOLUTION:
the coffee shop sold 350 cup cups of coffee this week and collected $230 in sales. Large cups sell for $.80 and the regular size sells for $.60. Determine the number of regular
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Question 711566:
the coffee shop sold 350 cup cups of coffee this week and collected $230 in sales. Large cups sell for $.80 and the regular size sells for $.60. Determine the number of regular size cups of coffee.
Answer by checkley79(3341) (Show Source): You can put this solution on YOUR website!
X+Y=350
OR
X=350-Y
.80X+.60Y=230
.80(350-Y)+.60Y=230
280-.80Y+.60Y=230
-.20Y=230-280
-.20Y=-50
Y=-50/-.20
Y=250 CUPS OF $.60 COFFEE WAS SOLD.
X+250=350
X=350-250
X=100 CUPS OF $.80 COFFEE.
PROOF:
.80*100+.60*250=230
80+150=230
230=230
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