Using mixture word problem, the antifreeze must be added to 12l of a 40% solution of antifreeze to obtain a 60% solution is 6l.
Mixture word method or mixture word problem is a method in mathematics to solve the problem when creating a mixture of two or more different things. This method will solve the problem for determining the quantity of mixture result.
In the question, we will mixture two antifreeze to obtain 60% solution. First we must know the maximum quantity of pure antifreeze is 100%. So,
(0.4*12) + (1*x) = 0.6*(12+x)
(0.4*12) + 0.1x = (0.6*12) + 0.6x
0.4x = 0.2*12
x = 0.2*30
x = 6
Thus, the pure antifreeze must be added is 6l.
Learn more about mixture word problem here:
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