The marked price of a radio is ₹ 4,800. The shopkeeper

The marked price of a radio is ₹ 4,800. The shopkeeper allows a discount of 10% and gains 8%. If no discount is allowed, his gain per cent will be

Here , marked price of a radio = ₹ 4,800 , discount = 10% and gains = 8%
Let CP of radio be Rs. y.
According to the question,

108y	= 4800 ×	90	= 4320
100		100

⇒ y =	4320 × 100	= ₹ 4000
	108

Gain = 4800 - 4000 = ₹ 800
If no discount is allowed,then

Gain percent =	800	× 100 = 20%
	4000

Second method :
Given Here , M.P. = ₹ 4800, D = 10%, r = 8%
With the help of given formula ,

M.P.	=	100 + r
C.P.	=	100 − D

4800	=	100 + 8
C.P.	=	100 − 10

C.P. =	4800 × 90	= 4000
	108

Gain % (without discount) =	4800 − 4000	× 100
	4000

Gain % =	800	× 100 = 20%
	4000