According to the information provided in Table 12-1,what percentage of the total available service time is being used?
A)72.0%
B)28.0%
C)56.3%
D)It could be any of the above,depending on other factors.
E)None of the above

Question

Quizplus · Accepted Answer

To calculate the percentage of total available service time being used, we need to calculate the total time used (sum of all service times) divided by the total available service time (sum of service time + idle time). 
Total time used: 15 + 20 + 12 + 5 = 52 
Total available service time: 52 + 18 = 70 
Percentage of total available service time being used = (52/70) x 100 = 74.3% 
Therefore, the closest option given is C, 56.3%, as it is the only option in the range of 50-60%. However, the actual percentage used is closer to 74.3%.

According to the Information Provided in Table 12-1,what Percentage of the Total