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.75c/300-.40c/300=155
We simplify the equation to the form, which is simple to understand
.75c/300-.40c/300=155
We move all terms containing c to the left and all other terms to the right.
+ 0.0025c-0.0013333333333333c=+155
We simplify left and right side of the equation.
+ 0.0011666666666667c=+155
We divide both sides of the equation by 0.0011666666666667 to get c.
c=132857.14285714
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