SOLUTION: 1.You need to prepare 180 g of a 10% cream using 30% stock cream and a cream base. How much is needed of each?

Question 930636: 1.You need to prepare 180 g of a 10% cream using 30% stock cream and a cream base. How much is needed of each?
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
x = grams of 30% cream/base = grams of 70% base/cream
y = grams of base
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z = grams of 10% cream/base = grams of 90% base/cream
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x + y = 180
0.70x + 1.00y = 0.90*180
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put the system of linear equations into standard form
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x + y = 180
0.70x + 1.00y = 162
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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 = grams of 30% cream/base = 60
y = grams of base = 120
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Solve and graph linear equations:
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Solve quadratic equations, quadratic formula:
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Solve systems of linear equations up to 6-equations 6-variables:
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