A) 1:2
B) 2:1
C) 5:1
D) 10:1
Correct Answer: B
Solution :
10% of \[m=m\times \frac{10}{100}=\frac{m}{10}\] 20% of \[n=n\times \frac{20}{100}=\frac{n}{5}\] According to the question, \[\Rightarrow \] \[\frac{{{a}_{1}}}{{{a}_{2}}}=\frac{{{b}_{1}}}{{{b}_{2}}}\]\[\Rightarrow \]\[{{a}_{1}}:{{a}_{2}}::{{b}_{1}}:{{b}_{2}}\] \[{{a}_{1}}:{{a}_{2}}={{b}_{1}}:{{b}_{2}}\]
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