Problema Solution
It takes about 20 minutes to grade A students paper how long in hours does it take to grade a papers for a class of 25 people
Answer provided by our tutors
For 1 paper u need 20 minutes for 25 papers you will need 25 times the time of 20 minutes:
25*20 = 500 min
Since 1 hour = 60 min we have 1 min = 1/60 hours:
500 min = 500*(1/60) = 50/6 = 8 hr 20 min = 8 1/3 hr = 8.33 hr