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2 answers:
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Answer:
90 and 30 liters
Step-by-step explanation:
1) if solution of 20% is 'x' and of 60% is 'y' liters, then
2) the pure chlorine is: for solution of 20% - 0.2x, for solution of 60% - 0.6y and
3) the mix of the two solutions is 120=x+y.
4) using these items it is possible to make up the system of two equations:
5) finally, x=90 liters of 20%; y=30 liters of 60% solution.
Answer:
Step-by-step explanation:
given equation
subtracting 17 from both sides
the solution for quadratic equation
is given by
x =
________________________________
in our problem
a = 1
b = 2
c = -16
thus value of x is