Ateacher graded 3/4 of class papers in 2 hours and 15 minutes. at this rate whole long does it take him to grade all papers of this class?
pls me

T=180minutes or 3 Hours

Step-by-step explanation:

Given the teacher was able to grade 3/4 of the class papers in 2hours and 15 minutes. Let there be x number of children in the class. Now convert the time into one unit ie, minutes .

1 hour=60 minutes

2 hours=120 minutes.

total time taken by the teacher to grade 3/4 of the class papers is=120+15=135minutes.

Now

3/4 of the class papers graded in 135 minutes.

let the time taken to grade all the papers is T; then

On cross multiplication we get

minutes.

Therefore the total time taken by the teacher to grade all the papers in the class is 180 minutes or 3 Hours.

8y^50

step-by-step explanation: