Does 120 represent the proportion of Water or the TOTAL?

Explanation:

Let all 3 samples be of 100 Lts.

Milk in Sample A = \(\frac{500}{8}\)
Milk in Sample B = \(\frac{300}{5}\)
Milk in Sample C = \(\frac{200}{3}\)

Total Milk = \(\frac{500}{8} + \frac{300}{5} + \frac{200}{3} = \frac{22700}{120} = 189.166\)

Now,
Total Water = Total Mixture - Total Milk = \(3(100) - 189.66 = 110.833\)

Col. A: \(\frac{189.166}{110.833} = 1.706\)

Col. B: \(\frac{237}{123} = 1.92\)

Hence, option B

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