Multiple choice

A man bought 15 items at Rs. 120 each, 13 items at Rs. 110 each, and 12 items at Rs. 130. Find average cost of item?

  1. 1723.3

  2. 1423.36

  3. 12.36

  4. 119.75

  5. 147.36
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D Correct answer
Explanation

Total cost = (15 * 120) + (13 * 110) + (12 * 130) = 1800 + 1430 + 1560 = 4790. Total items = 15 + 13 + 12 = 40. Average = 4790 / 40 = 119.75.

AI explanation

Using the basic average formula, the total cost is (15 times 120) plus (13 times 110) plus (12 times 130), giving 1800 + 1430 + 1560 = 4790. The total number of items is 15 + 13 + 12 = 40. The average cost is 4790 divided by 40, which is 119.75.

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