Step 1: Finding the increased amount
C.P of an article = ₹300
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.
Step 3: Finding the discount
Shopkeeper gives 10% discount on the new price.
Discount =360×10100
= ₹ 36
Hence, the discount given by the shopkeeper is ₹36.