Anil, Kamal and Vini invested Rs. 8000, Rs. 4000 and Rs. 8000 respectively in a business. Anil left after 6 months. If after 8 months, there was a gain of Rs. 4005, then what will be the share of Kamal ?

Ratio of profit of Anil : Kamal : Vini
(8000 × 6) : (4000 × 8) : (8000 × 8)
= 48000 : 32000 : 64000
= 48 : 32 : 64
= 3 : 2 : 4
$$\eqalign{ & \therefore {\text{Kamal's share}} \cr & = {\text{Rs}}{\text{.}}\left( {4005 \times \frac{2}{9}} \right) \cr & = {\text{Rs}}{\text{.}}\,{\text{890}} \cr} $$