A vendor wants to gain 25% by adding water to milk and selling the mixture at the cost price. Find the ratio of water and milk in the mixture.
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 1 : 4.
Let the C.P. of I L milk be Rs. 1
S.P of 1 L mixture = Rs. 1 and gain = 25%
S.P of 1 L mixture = (100/125) × 1 = Rs. 4/5
By the rule of allegation
Water = 1 – (4/5) = 1/5
And milk = 4/5 - 0 = 4/5 (as we consider 0 L water in the initial)
Then ratio = 1/5 : 4/5 = 1 : 4