it takes about 20 minutes to grade a student's paper. How long, in hours, does it take to grade papers for a class of 25 people?
You have to multiply the 20 min by the number of student in the class which are 25. Then take the minutes and devide them by the number of minutes in an hour.
20 x 25 = 500 minutes
500/60 = 8.3333 (round down) 8 hrs
You have to set up a proportion. The 20 goes diagonal to the 25. 1 goes in the denominator of the 20. The answer goes in the numerator of the 25.
2030202091029 lol
HI THERE
20/1 = 60/60 =8.33
500/60= 8.333
20x 25= 500
60x 1= 60