120 is greater than or equal to (3* 102+2x)/5 is greater than or equal to 108.
120 ≥ (306+2x)/5 ≥ 108
120 is greater than or equal to 6 1.20+2x/5 is greater than or equal to 108.
120 ≥ 2x/5 ≥ 46.8
If the solution is 120, x is greater than or equal to 1 17, that is, at least 1 17 points will be scored for the fourth time.
Is this detailed enough?