A began business with Rs.45000 and was joined afterwards by B with Rs.5400. When did B join if the profits at the end of the year were divided in the ratio of 2:1?
A. 4 months
B. 6 months
C. 7 months
D. 9 months
Explanation:
45*12 : 54*x = 2: 1
x = 5
12 -5 = 7