Can any one solve my problem

YOU HAVE TO SCORE ABVOE 40 MARKS IN BALANCE SUBJECT PLUS EXTRA 17 MARKS IN AGGREGATE OF ALL THE THREE SUBJECT. I EXP WITH AN EXAMPLE

ONE GROUP IN FINAL HAS 4 SUBJECTS, WE HAVE 50% OF MARKS TO CLEAR ONE GROUP( ie) 50% OF 400 = 200

YOU GOT 63 MARKS IN ONE PAPER SO (200-63=137) BALANCE 137 MARKS NEEDED TO CLEAR THE GROUP

YOU HAD 3 SUBJECTS IN HAND, MIN MARKS RQD IS 40 FOR EACH PAPER, SO (40*3=120) YOU HAVE TO SCORE 120 MARKS TO PASS THE PAPER BUT YOU WANT (137-120) 17 MARKS TO CLEAR THE GROUP WITH 50% OF MARKS.