in chess match one point is scored for a win, half a point for a draw and no point for a loss. If the match score is presently A to B is 3.5 to 1.5. How many games have been played?

How could this score have come about between A and B to win, draw ,loss and total match they play?

A had 3 wins, one loss and one draw in relation to B. That means 5 games.