Question

A 75% sugar solution is mixed with 40% sugar solution in some proportion to form mixture 'A' Mixture 'A' is then mixed with 200 litres of 40% sugar
solution to form mixture 'M'. If the concentration of mixture 'M' is 45% and the volume is 600 litres, what was the concentration of the mixture 'A' before
adding 200 litres of 40% sugar solution?
57.5%
52%
47.5%
42.5%​

Answer 1

Answer:

Your answer, in that case, is that 16.66666667 gallons of a 15% solution plus 5 gallons of a 40% solution are required to make 15 gallons of a 30% solution. 2.5 + 2 = 4.5 gallons of solution from the 15% and 40% solution.

How many ml of a 20% solution should be added to 50 ml of a 40% solution to obtain a 25% solution?

150

Question 1137340: How many ml of a 20% solution should be added to 50ml of a 40% solution to obtain a 25% solution? = 150. Answer.