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

65.25 63.25 65.00 65.75

65.25

Cost of 15 articles  15 × 70 = Rs.1050 Cost of 13 articles 13 × 60 = Rs.780 Cost of 12 articles 12 × 65 = 780 The average price of the article = \(\frac{1050 + 780 +780}{15 + 13 + 12}\) = \(\frac{d}{d}\) = 65.25