The estimated completion time for a particular 100 item test is 3 1/3 hours.

[djena]

The estimated completion time for a particular 100 item test is 3 1/3 hours. Ten applicants actually took the test and completed it in 3 hours. What is the difference between the actual and estimated rate of completion per item?

1. 10 seconds per item
2. 12 seconds per item
3. 14 seconds per item
4. 16 seconds per item

 

[stapel]

The estimated completion time for a particular 100 item test is 3 1/3 hours. Ten applicants actually took the test and completed it in 3 hours. What is the difference between the actual and estimated rate of completion per item?

1. 10 seconds per item
2. 12 seconds per item
3. 14 seconds per item
4. 16 seconds per item

What are your thoughts? What have you tried? How far have you gotten? Where are you stuck?

For instance, since they ask you about "seconds", you first converted each of "three and a third hours" and "three hours" to the appropriate numbers of seconds. You divided each by the hundred items to get the per-item value. And... then what?

Please be complete. Thank you!