Arun marks up the computer he is selling by 20% profit and

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Arun marks up the computer he is selling by 20% profit and sells them at a discount of 15%. Arun’s net gain percent is

1. 4%
2. 2%
3. 3.5%
4. 2.5%

Correct Option: B

Given Here , a = 20% , b = 15%
Using the given formula ,

Net gain percent =		a - b -	a × b		%
			100

Net gain percent =		20 - 15 -	20 × 15		%
			100

Net gain percent = (20 – 18)% = 2%