In what ratio must water be mixed with milk to gain 20% by selling the mixture at cost price ? · ABC26GN3952
Subject: General Aptitude · Chapter: Alligation or Mixture
In what ratio must water be mixed with milk to gain 20% by selling the mixture at cost price ?
Answer
No answer key was printed for this question.
Explanation
Let C.P. of milk be ` 1 per litre. Then, S.P. of 1 litre of mixture = ` 1. Gain obtained = 20%. 100 5 ∴ C.P. of 1 litre of mixture = = ` × 1 = ` . 120 6 By the rule of alligation, we have : C.P. of 1 litre of water C.P. of 1 litre of milk 0 `1 5 ` 6 1– 5 = 1 5 –0 = 5 6 6 6 6 1 5 ∴ Ratio of water and milk = : = 1 : 5. 6 6
Explanation as extracted from the printed page; notation may be imperfect.