How much of the 80% solution has been used in the entire process?
There are two solutions of sulphuric acid (acid+ water) with concentration of 50% and 80% respectively. They are mixed in a certain ratio to get a 62% sulphuric acid solutions. This solution is mixed with 6 litres of water to get back 50% solution.
A. 15 liters B. 12 liters C. 10 liters D. None of these
The correct answer to this question is C,10 liters. This questions has to do with averages.In relation to mathematics, an average is defined as a calculated central value of a set of numbers. This average is based onthe two solutions of sulphuric acid (acid+ water) with concentration of 50% and 80% respectively. Here is the math equation: 0.62 = [.50xn1 + .80 x n2] /[n1 + n2]