SOLUTION: An art dealer sold 10 etchings for $400. He sold some of them at $30 dollars each and the rest at $55 each. How many etchings did he sell at each price
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Question 931864: An art dealer sold 10 etchings for $400. He sold some of them at $30 dollars each and the rest at $55 each. How many etchings did he sell at each price Answer by TimothyLamb(4379) (Show Source):
You can put this solution on YOUR website! x = number of etchings sold at $30
y = number of etchings sold at $55
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x + y = 10
30x + 55y = 400
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put the system of linear equations into standard form
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x + y = 10
30x + 55y = 400
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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 of etchings sold at $30 = 6
y = number of etchings sold at $55 = 4
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