Direction: Study the data and answer the following questions:

Two friends A and B went into a partnership for a year. A invests Rs. 400 and B invests half of the initial investment of A. After some months, A removes Rs. 150 from his investment. After 7 months, B adds same amount as A removes from his investment. After 4 months, C joined them with amount Rs. 300. The ratio of their profit shares after a year is 25 : 21 : 16.