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kodGreya [7K]
3 years ago
7

How many quarts of a 50% solution of acid must be added to 20 quarts of a 20% solution of acid to obtain a mixture containing a

40% solution of acid?
Mathematics
1 answer:
Margaret [11]3 years ago
7 0
Suppose x quarts of the 50% solution 
0.5x+0.2*20=0.4(x+20)
0.5x+4=0.4x+8
0.1x=4
x=40
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