SOLUTION: A person was in charge of ordering 35 pizzas for an office party. He ordered three types of pizza, cheese, pepperoni, and supreme, the cheese cost 9$ each, pepperoni cost 12$ each,

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Question 932204: A person was in charge of ordering 35 pizzas for an office party. He ordered three types of pizza, cheese, pepperoni, and supreme, the cheese cost 9$ each, pepperoni cost 12$ each, and supreme cost 15$ each. He spent exactly twice as much money on the pepperoni pizza as he did the cheese pizza. If the person spent a total of 420$ how much was each type of pizza
Answer by TimothyLamb(4379) About Me  (Show Source):
You can put this solution on YOUR website!
x = number cheese pizzas
y = number pepperoni pizzas
z = number supreme pizzas
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x + y + z = 35
9x + 12y + 15z = 420
12y = 2*9x
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put the system of linear equations into standard form
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x + y + z = 35
9x + 12y + 15z = 420
18x - 12y = 0
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copy and paste the above standard form linear equations in to this solver:
https://sooeet.com/math/system-of-linear-equations-solver.php
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solution:
x = number cheese pizzas = 10
y = number pepperoni pizzas = 15
z = number supreme pizzas = 10
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