The marked price of a CD is Rs. 250. It is sold for Rs.

The marked price of a CD is Rs. 250. It is sold for Rs. 225. The rate of discount is :

Marked price = Rs. 250
S.P. = Rs. 225
Discount = 250 – 225 = Rs. 25
If the rate of discount be x%, then

250 × x	= 25
100

⇒ x =	25 × 100	= 10%
	250

Second Method : Here, M.P. = Rs. 250, S.P. = Rs. 225

Discount % =	M.P. − S.P.	= 100%
	M.P.

=	250 − 225	× 100% = 10%
	250