Multiple choice

Two vessels A and B contain milk and water mixed in the ratio 4 : 3 and 2 : 3. In what ratio these mixtures should be mixed to form a new mixture containing half milk and half water is- दो बर्तनों A और B में दूध और पानी का अनुपात क्रमशः 4 : 3 और 2 : 3 है तो इन बर्तनों के मिश्रण को किस अनुपात में मिलाया जाये कि नये मिश्रण में आधा दूध व आधा पानी हो।

  1. 7 : 5

  2. 6 : 5

  3. 5 : 6

  4. 4 : 3

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A Correct answer
Explanation

Vessel A has milk fraction 4/7, Vessel B has milk fraction 2/5. For a 1:1 milk-water mixture, we need equal milk and water. Setting up the equation (4/7)x + (2/5)y = (3/7)x + (3/5)y where x:y is the mixing ratio, we get x/y = 7/5. So the vessels should be mixed in 7:5 ratio.