In what proportion must a man mix milk worth₹3.3/litre with milk worth₹1.8/litre so that the mixture may be worth ₹2.4/litre?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e 2 : 3.
Let the man mix x litres of milk worth ₹3.3/litre with y litres of milk worth ₹1.8/litre.
Using the allegation method:
Price of expensive milk = 3.3
Price of cheap milk = 1.8
Mean price = 2.4
Difference between expensive and mean = 3.3 − 2.4 = 0.9
Difference between mean and cheap = 2.4 − 1.8 = 0.6
Ratio of expensive to cheap milk = 0.6 : 0.9 = 2 : 3