A profit of 10% is made after giving a discount of 5% on

A profit of 10% is made after giving a discount of 5% on a T. V. If the marked price of the TV is ₹ 2640.00, the cost price of the TV was :

Here , profit = 10% and discount = 5%
Let the C.P. of TV be y, then

y × 110	= 2640 ×	95
100	= 2640 ×	100

⇒ y =	2640 × 95	= ₹ 2280
	110

Second method :
Here, r = 10% , D = 5% , M.P. = ₹ 2640 , C.P. = ?
We can find required answer with the help of given formula ,

M.P.	=	100 + r
C.P.	=	100 − D

2640	=	100 + 10
C.P.	=	100 − 5

C.P. =	2640 × 95
	110

C.P. = 24 × 95 = ₹ 2280