A man bought 13 articles at ₹70 each, 15 at ₹60 each and 12 at ₹65 each. The average price per article is :

₹60.75 ₹64.75 ₹65.75 ₹62.75

₹64.75

According to the question = Total prize = 13 × 70 + 15 × 60 + 12 × 65 = 2590 Total Quantity = 13 + 15 + 12 = 40 Average prize = \(\frac{Total \; cost}{Total \; quantity}\) Average prize = \(\frac{2590}{40}\) = 64.75