Kohli and Dhoni decided to have a paintball match.
Kohli told Dhoni, "Sir it is not right as you got thrice the paintballs I have".
Dhoni instantly gives Kohli 10 of hit paintballs.
Kohli replied, "Sir, I believe you still have twice the paintballs than I have".
Dhoni gives "?" more paintballs to Kohli.
Kohli replied, "Sir Its even now, Let us have a match".
What is "?".