SOLUTION: A solution of 53% pesticide is to be mixed with a solution of 21% pesticide to form 128 liters of a 40% solution. How many liters of the 53% solution must be used?
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Question 461704: A solution of 53% pesticide is to be mixed with a solution of 21% pesticide to form 128 liters of a 40% solution. How many liters of the 53% solution must be used? Answer by jorel1380(3719) (Show Source):
You can put this solution on YOUR website! 128x.4=51.2
p+q=128
.53p+.21q=51.2
53p+21q=5120
21p+21q=2688
32p=2432
p=76
q=52
You need 76 liters of 53% solution and 52 liters of 21% solution..
