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When a 30% concentration of alcohol is mixed with an 80% concentration of alcohol we get a mixture of 50% concentration of alcohol. In what ratio were these two different concentrations of alcohol mixed?

When a 30% concentration of alcohol is mixed with an 80% concentration of alcohol we get a mixture of 50% concentration of alcohol. In what ratio were these two different concentrations of alcohol mixed? Correct Answer 3 : 2

Given:

When a 30% concentration of alcohol is mixed with an 80% concentration of alcohol we get a mixture of 50% concentration of alcohol. 

Formula:

Mixture and Allegation method:

Required ratio = 30 ∶ 20 = 3 ∶ 2

∴ The required ratio is 3 ∶ 2.

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