Join Our Socials
8 months
6 months
5 months
4 months
D. 4 months
Suppose B joined after x months. Then, B's money was invested for
(12 - x)(76000 x 12)/(57000 x (12-x) =2/1
912000=114000(12-x)
114 (12 - x) = 912ó12-x=8óx=4
Hence, B joined after 4 months.