Ravi started a business and Raj joined him after a few months. The rartio of their investments is `3:4`. If their profits at the end of the year are equal, then find when Raj joined the business ?

A starts a business with ? 2000 and B joins him after 3 months with ? 8000. Find the ratio of their profits at the end of the year.

A starts a business with Rs. 4000 and B joins him after 3 months with Rs. 16000. Find the ratio of their profits at the end of year.

X starts a business with X 30000 and Y joins him after 3 months with X 120000. Find the ratio of their profits at the end of the year.

A starts a business with X 4000 and B joins him after 3 months with X 16000. Find the ratio of their profits at the end of year.

A starts a business with X 9000 and B joins him after 6 months with an investment of X 45000. What will be the ratio of the profits of A and B at the end of year ?

Rakesh started a book stall with an investment of ₹ 18000 and Rohan joined him later with an investment of ₹ 15000.If the ratio of their profits at the end of the year is 12:5, then after how many months did Rohan join Rakesh ?