Multiple choice

A shopkeeper takes Rs. 10 per liter of groundnut oil and mixes it with Rs. 2 per litre of linseed oil in it in the ratio 3 : 1. What will be the average price of the resulting impure form of the groundnut oil?

  1. 9

  2. 8

  3. 7

  4. 6
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Weighted average = (3 * 10 + 1 * 2) / (3 + 1) = (30 + 2) / 4 = 32 / 4 = 8.

AI explanation

Using the weighted average method, the average price per litre of the resulting mixture is calculated by summing the products of the cost and the ratio quantity for each component, then dividing by the total quantity. The calculation is (10 multiplied by 3) plus (2 multiplied by 1), all divided by (3 plus 1). This gives 32 divided by 4, resulting in an average price of Rs. 8 per litre.

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