Mathematics, 19.08.2020 03:01, july00

17. Notthon needs to make 30 litres of a 28% acid solution. He has 2 bottles, one containing 20% acid and the other 50% acid. What
volume of each should he mix together 20 make the 28% acid solution?

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17. Notthon needs to make 30 litres of a 28% acid solution. He has 2 bottles, one containing 20% ac...