Scenario 7.1
Of 1,350 people surveyed, 318 are not working.
The status of those not working is as follows:
122 full-time students
29 discouraged workers
18 in long-term-care facilities
21 seeking employment and age 16 or older
50 retirees
63 under age 16
15 working in the underground economy and not looking for a "real" job
Eight of those working were under 16 years of age.
-Refer to Scenario 7.1. According to the data provided, the number of workers officially unemployed is:
A)122.
B)36.
C) 40.
D) 21.
E)55.

Question

Quizplus · Accepted Answer

To find the number of workers officially unemployed, we need to subtract all categories of non-working people except for those who are seeking employment and age 16 or older. 
So, 
Number of workers officially unemployed = 318 -122 (full-time students) -29 (discouraged workers) -18 (in long-term-care facilities) -50 (retirees) -63 (under age 16) -15 (working in underground economy) +8 (under 16 years of age who are working) 
= 318 - 309 
= 9

Therefore, the number of workers officially unemployed is 9, which corresponds to option D.

Scenario 7.1 Of 1,350 People Surveyed, 318 Are Not Working