A and B start a business jointly. A invests Rs.16000 for 8 months and B remains in the business for 4 months. Out of the total profit B claims 2/7th share. How much money is contributed by B?

A and B start a business jointly. A invests Rs.16000 for 8 months and B remains in the business for 4 months. Out of the total profit B claims 2/7th . How much money is contributed by B?

A. Rs.10000
B. Rs.12800
C. Rs.6000
D. Rs.8000
Explanation:
16*8: x*4 = 5:2
x = 12.8 => Rs.12800