Question 85501
It's like an averaged equation:
[x1y1 + x2y2]/(x1 + x2) = Final Percentage
x1 is the amount of solution with y1 percentage
x2 is the amount of a different solution with y2 percentage
[1(22%) + x2(100%)]/(1 + x2) = 27%
[0.22 + x2]/(1 + x2) = 0.27
0.22 + x2 = 0.27 + 0.27x2
0.73x2 = 0.05
x2 = 5/73