A started a business with 14000 and B joined afterward with 12000 . If the profit at the end of a year was divided in the ratio 2:1 respectively, then after how much time B would have joined A?

5 months 

                 A                                     B 

inv.→       14000                             12000

               × 12                                × X

profit→   -----------------------------------------

      given→ (2                :                    1)

\(\frac{14000 × 12 }{12000× X }\)   =  \(\frac{2}{1}\)

\(\frac{14}{X}\) = \(\frac{2}{1}\)

x = 7

So, B joined after ( 12 - 7 ) = 5 Months