Question

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

(1) 5:1 

(2) 2:1 

(3) 1:2 

(4) 10:1

Answer 1

Correct option is: (2) 2 : 1

10% of m = 20% of n

\(\frac{10}{100} \times m = \frac{20}{100} \times n\)

\(\frac{m}{10} = \frac{n}{5}\)

\(5m = 10 n\)

\(\frac{m}{n} = \frac{10}{5}\)

m : n = 2 : 1