By Mansi Yadav

Verified by Ajay Kumar

A perfumer blends two perfumes costing ₹900/L and ₹600/L to make 240 L of blend at ₹750/L. Due to poor packaging, 15 L leaks out. How much of the ₹900/L perfume was used?

  1. 100

  2. 110

  3. 120

  4. 130

Answer: C

Solution

Solution: The mixture price ₹750/L is exactly midway between ₹900/L and ₹600/L. By alligation, the quantities are equal. Therefore, the ₹900/L perfume used \(=\frac{240}{2}=120\) L. The 15 L leakage occurred after blending and does not change the amount originally used. Trick: When the mean price is the average of the two prices, equal quantities are mixed.

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