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?
Choose the correct choice from the following choices:	A) 3	B) 4	C) 5	D) 6	E) 7
Solution   Suppose B joined after x months.   Then,	21000×12=36000×(12 - x)   ‹=›36x=180   = x= 5.   Answer 5
<result>C</result>
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?