**Question:**

**15% increase in price of an article, which is Rs.1,620, is the increase of ____.**

**Solution:**

Rs.212

Explanation: Let x is the price of the article.

Thus, as per given question;

1620 = x + x × (15/100)

1620 = 115x/100

115x = 1620 × 100

x = (1620×100)/115

x = 1408

Hence, increase in price = 1620 – 1408 = 212.