Step 1: Finding the increased amount
C.P of an article = ₹300
Increase in price = 20%
Now,
Increased amount =300×20100
=3×20
= ₹ 60.
Step 2: Finding new price or marked price of the article
∴ New price = C.P + increased amount
= ₹ 300+ ₹ 60
= ₹ 360
Hence, new price of the article is ₹360.