An article is sold at 5% profit. The ratio of selling price

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An article is sold at 5% profit. The ratio of selling price and cost price will be

1. 1 : 5
2. 20 : 21
3. 21 : 20
4. 5 : 1

Correct Option: C

Let C.P. be 100 then,
S.P. = 105 [gain being 5%]
Required ratio = 105 : 100 = 21 : 20
We can find required answer with the help of given formula :
Here , Profit = 5%

		C.P.	=	100
		S.P.		100 + profit%

Required ratio =	100
	100 + 5

Required ratio =		100	=	20	= 20 : 21
		105		21