Twenty–five litres of 40% concentration of an acid solution is added – McqOptions

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1.	Twenty–five litres of 40% concentration of an acid solution is added to 35 litres of 70% concentration of the acid solution. What is the concentration of acid in the new solution?
A.	62.5%
B.	57.5%
C.	55%
D.	60%
Answer» C. 55%

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