If 10% of m is the same as 20% of n, then m : n is equal

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If 10% of m is the same as 20% of n, then m : n is equal to :

1. 2 : 1
2. 1 : 2
3. 1 : 10
4. 1 : 20

Correct Option: A

Given that , 10% of m = 20% of n

⇒	10	× m =	20	× n
	100		100

⇒	m	=	10	=	2
	n		5		1

∴ Required ratio = m : n = 2 : 1