posted by Johnny .
6. If each of eight biology classrooms is in use for 5 hours and 15 minutes per day, and total of 84 student experiments are done, how long does each experiment take on average?
C. 40 minutes
please show work.
8 hrs, 15 minutes = 315 minutes
total minutes available for the experiments
= 8(315) = 2520 minutes
84 experiments take 2520 minutes
1 experiment takes 2520/84 or 30 minutes