Radha and Sham went into a partnership for a year. Radha invests Rs.200 and Sham invests Rs.100. After 4 months, Radha adds Rs.50 to his investment. After 5 months, Sham adds Rs.300 to his investment. Profit they had in a year is Rs.915. Find the profit share of Sham.
1. Rs.680
2. Rs.580
3. Rs.380
4. Rs.410
5. Rs.495