Zhen is an audiobook narrator. The table gives some completed audio lengths and the amount of time Zhen spends researching, recording, and editing the audiobook.

Completed (hours) _ Working time (hours)
1 _ 6 1/2

3 1/2 _ 22 3/4

7 _ 45 1/2

10 _ 65

a.

Step-by-step explanation:

The following information is missing in the question:

What does 6 1/2 mean in this situation

a. Zhen spends 6 1/2 hours working for every hour of the completed audiobook.

b. Zhen completes 6 1/2 audiobooks in an hour.

c. Zhen spends 6 1/2 hours working per audiobook.

It means that Zhen needs 6 1/2 working hours to record 1 hour of the audiobook. Zhen needs to work more than one hour to record one hour of the audiobook, because besides recording, he also needs to research and edit.

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