This is really about the rules your employer uses to measure employee performance, and not about "math"

So, in order to answer this question, you will have to explicitly state what the rule is. Some examples of what the rule(s)

The above is by no means a complete list.

*per se*.So, in order to answer this question, you will have to explicitly state what the rule is. Some examples of what the rule(s)

*be are:***might**
At least 40% of your work time must be spent on the phone (24 / 60 = 40%)

For each complete hour you work, you must have 24 minutes of phone time (based on shift duration)

For each complete hour or partial hour you work, you must have 24 minutes of phone time (based on shift duration)

For each complete hour you work, you must have 24 minutes of phone time (based on clock hours)

For each complete hour or partial hour you work, you must have 24 minutes of phone time (based on clock hours)

The above is by no means a complete list.