SOLUTION: A chocolate factory has 2 kinds of chocolate minibar which cost 14 and 8 per kg., respectively. How many kgs. each must be used to make a mixture of 42 kg to sell at 10 per kg.?

Question 932724: A chocolate factory has 2 kinds of chocolate minibar which cost 14 and 8 per kg., respectively. How many kgs. each must be used to make a mixture of 42 kg to sell at 10 per kg.?
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
x = kg of $14 bars
y = kg of $8 bars
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x + y = 42
14x + 8y = 10*42
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put the system of linear equations into standard form
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x + y = 42
14x + 8y = 420
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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 = kg of $14 bars = 14
y = kg of $8 bars = 28
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