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$1/4$th of $60\%$ of a number is equal to $2/5$th of $20\%$ of another number. What is the respective ratio of the first number to that of second number?

1. $8:15$
2. $5:9$
3. $8:13$
4. $4:7$
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$Let\ 1^{st}$ $number$ $is$ $x$ $and$ $2^{nd}$ $number$ $is$ $y.$

$\Rightarrow$ $\textrm{($\frac{1}{4}$* ($60$%)of x})$ $=$ $\textrm{($\frac{2}{5}$* ($20$%)of y)}$

$\Rightarrow$ $\textrm{$(\frac{60}{400}$)of x}$ $=$ $\textrm{$(\frac{40}{500}$)of y}$

$\Rightarrow$ $\frac{x}{y}$  $=$ $\frac{8}{15}$

$\textrm{Option A.}$
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