Correct Answer - Option 2 : 5 : 1
Given:
Price difference which required
Concept:
(Quantity of Cheaper)/(Quantity of Dearer) = (Rate of Dearer - Average Rate)/(Average Rate - Rate of Cheaper)
Calculation:
⇒ Let be assume the price of water is 0 rupee
⇒ By applying the allegation equation,
⇒ (Quantity of Milk)/(Quantity of water) = (25 - 0)/(30 - 25) = 25/5 = 5 : 1
∴ The required result will be 5 : 1.