Question 142694: 3.40 for 3 doughnuts and 2 coffees, then 3.60 for 2 doughnuts and 3 coffees. What is the bill for 1 doughnut and 1 coffee? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! 3.40 for 3 doughnuts and 2 coffees, then 3.60 for 2 doughnuts and 3 coffees. What is the bill for 1 doughnut and 1 coffee?
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EQUATIONS:
3d + 2c = 3.40
2d + 3c = 3.60
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Use any method to solve the system to get:
d = 0.6 or 60 cents
c = 0.8 or 80 cents
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Cheers,
Stan H.
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