CAN SOMEONE HELP PLEASE.GIVING 25 POINTS

Luke recorded the grade-level and instrument of everyone in the middle school
School of Rock below.
Seventh Grade Students
Eighth Grade Students
Instrument # of Students
14
Instrument # of Students
Guitar
5
Bass
9
Drums
9
Keyboard
9
Guitar
Bass
Drums
Keyboard
13
15
6
Based on these results, express the probability that an eighth grader chosen at
random will play an instrument other than bass as a fraction in simplest form.

CAN SOMEONE HELP PLEASEGIVING 25 POINTS Luke recorded the gradelevel and instrument of everyone in the middle school School of Rock below Seventh Grade Students class=