Question

A grading machine can grade 96 multiple choice tests in 2 minutes. If a teacher has 300 multiple choice tests to grade, predict the number of minutes it will take the machine to grade the tests.​

Answer 1

6 minutes 15 seconds

Explanation:

➟ 2/96 = 0.02083

Now we have find the value of minutes per question let's crosscheck it using 96 to make sure it's correct before using it for 300

➟ 0.02083 × 96

➟ 1.9 = 2

Time to calculate for 300 multiple choice test

➟ 0.02083 × 300

➟ 6.249

➟ 6.25

➟ 6 minutes 15 seconds

Answer 2

6.25 minutes

Explanation:

96 choice = 2 minutes

300 choice = x

solve for x,

x = 6.25 minutes