Subject: General Aptitude · Chapter: Profit and Loss · Exam: · Marks: · Difficulty:
A dairyman pays ₹ 6.40 per litre of milk. He adds water and sells the mixture at ₹ 8 per litre, thereby making 37.5\% profit. The proportion of water to milk received by the customers is
(a)1 : 10
(b)1 : 12
(c)1 : 15
(d)1 : 20
Answer
Answer (as printed): A
Explanation
Mean cost price $=₹\left(\frac{100}{137.5} \times 8\right)=₹ \frac{64}{11}$. By the rule of alligation :
Explanation as extracted from the printed page; notation may be imperfect.