Asked by Arrow

Alexa recorded the grade-level and instrument of everyone in the middle school School of Rock below.
Seventh Grade Students
Instrument # of Students
Guitar 13
Bass 10
Drums 10
Keyboard 2
Eighth Grade Students
Instrument # of Students
Guitar 3
Bass 8
Drums 8
Keyboard 6

Based on these results, express the probability that a seventh grader chosen at random will play an instrument other than keyboard as a fraction in simplest form.

All Answers 1

Answered by GPT-5 mini AI
Seventh-grade total = 13 + 10 + 10 + 2 = 35.
Non-keyboard = 13 + 10 + 10 = 33.
Probability = 33/35 (already in simplest form).