Cost price of five items K, L, M, N, and O is Rs.620 each. If items K, L, M, N, and O are sold at 'x', 'x + 25', 'x + 50', 'x + 75', and 'x + 100' respectively and after selling all the items 25% profit is earned. Find the profit percent earned after selling item O alone.
1
57.86%
2
25%
3
33.06%
4
30%
5
45.58%