SOLUTION: An hour long test has 100 problems. If a student completes 20 problems in 20 minutes, how many seconds does he have on average for completing each of the remaining problems? Tha

Question 472197: An hour long test has 100 problems. If a student completes 20 problems in 20 minutes, how many seconds does he have on average for completing each of the remaining problems?
Thanks!
Answer by edjones(8007) (Show Source): You can put this solution on YOUR website!
100-20=80 problems remain
60-20=40 minutes remain
80/40 = 2 problems/minute or 30 seconds on average for completing each of the remaining problems.
.
Ed