share amount among friends

Three Friends A, B and C jointly thought of engaging themselves in a business venture. It was agreed that A would invest Rs. 6500 for 6 months, B, Rs. 8400 for 5 months and C, Rs. 10,000 for 3 months. A wants to be the working member for which, he was to receive 5% of the profits. The profit earned was Rs.7400. Calculate the share of B in the profit.

A. Rs. 1900                               B. Rs. 2660
C. Rs. 2800                               D. Rs. 2840

Watch this space for answer in a week.