Answer: 20 hours
Step-by-step explanation:
Deena has already fielded 120 calls this week, and the weekly goal of fielded calls is 240. So, the remaining number of calls Deena needs to field is:
Remaining calls = 240 - 120 = 120
Since Deena fields an average of 6 calls per hour, the number of hours she needs to work to reach the weekly goal is:
x = (Remaining calls)/(Average calls per hour) = 120/6 = 20 hours