Question 388520: at a pizza shop, two small pizzas, a liter of soda, and a salad cost $14; one small pizza, a liter of soda, and three salads cost $15; and three small pizzas and a liter of soda cost $16. What is the cost of one small pizza? Set up three equations with three variables and then solve the system.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! at a pizza shop, two small pizzas, a liter of soda, and a salad cost $14;
one small pizza, a liter of soda, and three salads cost $15;
and three small pizzas and a liter of soda cost $16.
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What is the cost of one small pizza?
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Equations:
2p + d + s = 14
p + d +3s = 15
3p + d + 0 = 16
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Use any method you know to solve to get:
p = $5 (price of one pizza)
d = $1 (price of one soda)
s = $3 (price of one salad)
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Cheers,
Stan H.
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