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Luba_88 [7]
3 years ago
13

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
2 answers:
anygoal [31]3 years ago
8 0

Answer:

x=40

Step-by-step explanation:

0.50x + 20(0.20) = 0.40(x + 20)

0.5x+4=0.4x+8

0.1x+4=8

0.1x=4

x=40

ollegr [7]3 years ago
7 0

Answer:

40

Step-by-step explanation:

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