Multiple choice

Mixture A contains 12.5% water and mixture B contains 10% water. In what ratio both mixtures should be mixed in a bottle so that in bottle ratio of milk and water be 89:11. मिश्रण A में पानी 12.5% और मिश्रण B में पानी 10% पानी है । एक बोतल में दोनों को किस अनुपात में मिलाना चाहिए ताकि बोतल में दूध और पानी का अनुपात 89:11 हो जाये।

  1. 1:2

  2. 1:3

  3. 2:3

  4. 1:4

  5. 1:5

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is an allegation problem. Let the mixtures be combined in ratio 2:3. Mixture A has 12.5% water (87.5% milk), Mixture B has 10% water (90% milk). Combined water = (2×12.5 + 3×10)/(2+3) = 55/5 = 11%. Combined milk = (2×87.5 + 3×90)/5 = 445/5 = 89%. This gives milk:water = 89:11, which matches option C.