A started a business with Rs.21,000 and is joined afterwards by B with Rs.36,000. After how many months did B join if the profits at the end of the year are divided equally?

A started a business with Rs.21,000 and is joined afterwards by B with

1.	A started a business with Rs.21,000 and is joined afterwards by B with Rs.36,000. After how many months did B join if the profits at the end of the year are divided equally?
A.	4
B.	5
C.	6
D.	7
Answer» C. 6