Akash starts a business with $Rs.45,000$ Prakash joins in the business after 3 months with $Rs. 30,000$ What will be the ratio in which they should share the profit at the end of the year ?

Question

$\begin{array}{1 1} 1:2 \\ 1:3 \\ 2:1 \\ 3:1 \end{array} $