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.

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

A starts a business with X 4000. B joins him after 3 months with X 8000. C puts a sum of X 20000 in the business for 2 months only. At the end of year, the business gives a profits of X 16800 . How should the profit be divided amongst them ?

A began business with Rs.45000 and was joined afterwards by B with Rs. 54000. After how many months did Bjoin if the profits at the end of the year were divided in the ratio 2:1?