Search
Ask a question
0

Please andwer

forty liters of a 60% disinfectant solution are to be mixed with a 20% solutionto dilute it to a20% solution. How much of the 10% solution must be used

1 Answer by Expert Tutors

Tutors, sign in to answer this question.
J.R. S. | Ph.D. in Biochemistry--University Professor--Chemistry TutorPh.D. in Biochemistry--University Profes...
4.9 4.9 (38 lesson ratings) (38)
0
If x = amount of 10%
(40)(60) + (x)(10) = (40+x)(20)
2400 + 10x  = 800 + 20x
1600 = 10x
x = 160 liters of 10% should be mixed with 40 liters of 60% to make 20%