CUET · MATHS · PYQ PAPER 2025
Pure milk costs Rs. 75 per litre.
A milkman adds water to 28 litres of pure milk and sells the mixture at Rs. 60 per litre.
How many litres of water does he add?
- A 5
- B 6
- C 7
- D 6.5
Answer & Solution
Correct Answer
(C) 7
Step-by-step Solution
Detailed explanation
\( 28 \times 75 = (28 + V_w) \times 60 \) \( 2100 = 1680 + 60 V_w \) \( 60 V_w = 2100 - 1680 \) \( 60 V_w = 420 \) \( V_w = \frac{420}{60} \) \( V_w = 7 \text{ litres} \)
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