IBPS RRB Officer Prelims 10 Sep 2017 Paper

Question : 73 of 80

Marks: +1, -0

Ravi starts a business with Rs. 45000. After a certain period of time he is joined by Mohan who invests Rs. 30000. At the end of the year they divide the profit in the ratio 9 : 4. After how many months did Mohan join Ravi ?