The total number of tests they can grade in 3 hours are 90.
What is graded test?
Your grade in an exam or written assignment is the letter or number you receive as a mark that represents your level of proficiency.
A graded exercise test (GXT) is a screening tool for determining a person's level of fitness. The test measures the cardiovascular response to exercise in order to assess the participant's capacity for exercise.
Since, the number of minutes in 3 hours is:
= 3 x 60 minutes per hour
= 3 x 60
= 180 minutes
The number of tests that Sam can grade in these 3 hours is therefore:
= ( Number of total minutes / Minutes taken by Sam for 6 tests) x 6 tests
= ( 180 / 24) x 6
= 45 tests
The number of tests that Ben can grade are:
= ( Number of total minutes / Minutes taken by Ben for 5 tests) x 5 tests
= ( 180 / 20 ) x 5
= 45 tests
So, the total number of tests they can grade in 3 hours is:
= 45 + 45
= 90 tests
Hence, the total number of tests they can grade in 3 hours are 90.
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