5 teachers can mark 60 exams papers in 4 hours.how long will it takes 3,teachers to marks all 60 papers
In 20 teacher-hours (5*4) teachers can mark 60 exams, so each teacher marks 3 exams per hour (60/20).
(3*3) * x = 60
Solve for x.
(3*3) * x = 60
Solve for x.