Answer: 7 hours and 8 minutes
Step-by-step explanation:
7 tests in 25 minutes
7 divided by 25= 3.57
3.57 minutes per test times 120 tests= 428.57 minutes
428.57 divided by 60 (60 minutes in an hr) = 7 hours and 8 minutes (and 57 seconds if u want to count those too)
