SOLUTION: large pizzas cost $12.50 and small pizzas cost$9.00. Liam ordered 4 more large pizzas than small pizzas and the bill came to $415.50. How many of each type of pizza did Liam order?

Question 822515: large pizzas cost $12.50 and small pizzas cost$9.00. Liam ordered 4 more large pizzas than small pizzas and the bill came to $415.50. How many of each type of pizza did Liam order?
Found 2 solutions by TimothyLamb, josgarithmetic:
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
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y = x + 4
900x + 1250y = 41550
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put the system of linear equations into standard form
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x - y = -4
900x + 1250y = 41550
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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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answer:
x= small = 17
y= large = 21
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Solve and graph linear equations:
https://sooeet.com/math/linear-equation-solver.php
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Solve quadratic equations, quadratic formula:
https://sooeet.com/math/quadratic-formula-solver.php
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Solve systems of linear equations up to 6-equations 6-variables:
https://sooeet.com/math/system-of-linear-equations-solver.php
Answer by josgarithmetic(39615) (Show Source): You can put this solution on YOUR website!
x and y for small and large pizzas.
and

Two equations and two unknown variables. Simplest is to use substitution for y in the money equation and first find the value for x.
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