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

Correct option is A

Given:

10% of m is the same as 20% of n

Solution:

According to the question 

10% of m = 20% of n 

10% $$\times$$ m = 20% $$\times n$$  

​$$\frac{m}{n} = \frac{2}{1}$$​​

Then the ratio of m and n = 2 : 1