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Alligation & Mixtures · Question 37 of 88

With 15 litres of water added, what is the dairy's profit per cent?

Question 37

MediumOriginal question

A dairy buys 60 litres of milk at ₹54 a litre, adds some water, which costs nothing, and sells the mixture at ₹54 a litre.

With 15 litres of water added, what is the dairy's profit per cent?

Options for question 37

Show the answer and explanation
CorrectNot quiteAnswer B

Correct answer: B

Explanation

  1. It sells 75 litres at ₹54 for ₹4,050 against a cost of ₹3,240.

  2. Profit =810= 810, and 8103,240=25%\frac{810}{3{,}240} = 25\%.

Worth noting

20% is the water's share of the mixture, 1575\frac{15}{75}; profit is on the cost.

Concept
Profit from adding water
Typical time
120 s
Your time
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