A man purchases 10 identical articles for a total cost of ₹15. If he sells each article at ₹1.7, what is his profit percentage? (Round off your answer to two decimal places.)

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**Solution:**

1. Given the total cost price (CP) for 10 articles is ₹15, the cost price of one article is:
   
   $$	ext{CP per article} = \frac{15}{10} = 1.5 	ext{ ₹}$$

2. The selling price (SP) of each article is ₹1.7.

3. Calculate the profit made on each article:
   
   $$	ext{Profit} = 	ext{SP} - 	ext{CP} = 1.7 - 1.5 = 0.2 	ext{ ₹}$$

4. Compute the profit percentage using the formula:
   
   $$	ext{Profit \%} = \left( \frac{	ext{Profit}}{	ext{CP}} ight) 	imes 100 = \left( \frac{0.2}{1.5} ight) 	imes 100 = 13.33\%$$

**Answer:** 13.33\%

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