A, B and C invest in a partnership in the ratio: 7/2,4/3,6/5. After 4 months, A increases his share 50%. If the total profit at the end of one year is Rs.21,600, then what is B's share in the profit? Choose the correct choice from the following:
A) 1000	B) 2000	C) 3000	D) 4000	E) 5000
Ratio of the initial investment   =7/2:4/3:6/5=105:40:36   Therefore, let the initial investments of A, B and C be 105x,40x and 36x respectively   A increases his share 50% after 4 months. Hence the ratio of their investments   =(105x×4)+(105x×150/100×8) :40x×12:36x×12   =105+(105×3/2×2) :40×3:36×3   =105×4:40×3:36×3   =35×4:40:36   =35:10:9   B's share = total profit × 10/54   =21600×10/54=4000   Answer is 4000.
<result>D</result>
A, B and C invest in a partnership in the ratio: 7/2,4/3,6/5. After 4 months, A increases his share 50%. If the total profit at the end of one year is Rs.21,600, then what is B's share in the profit?