Mathematics · Mixtures and Alligations
The concentrations of three acids, A, B, and C, are specified as 20%, 30%, and 40%, respectively. They are blended in a ratio of 3 : 5 : a, yielding a solution with a concentration of 30%. What is the value of 'a'?
- 14
- 22
- 31
- 43✓
Correct answer
3
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