Pure milk costs Rs. 20 per litre. After adding water the milkman sells the mixture at the rate of Rs. 18 per litre, thereby making a profit of 25%. In what ratio does he mix the two?
Solution
Correct Answer: Option A
SP of mixture = Rs. 18 / kg
Profit % = 25
CP of mixture = (SP × 100) / (100 + profit%)
⇒ CP of mixture = (18 × 100) / (100+25)
⇒ CP of mixture = 1800 / 125 = Rs. 14.4
Now, Since the CP of pure milk = Rs.20/ kg
CP of pure Milk CP of Water
20 0
CP of mixture = 14.4
= 14.4 – 0 = 14.4 20 – 14.4 = 5.6
Hence, the ratio of milk : water = 14.4 : 5.6
= 18 : 7
Practice More Questions on Our App!
Download our app for free and access thousands of MCQ questions with detailed solutions