JAMB - Geography (2002 - No. 36)

Textile Industry         -    7.2o

Petroleum Industry       -    172.8o

Iron and Steel Industry  -    115.2o

Cosmetics Industry       -    43.2o

Automobile Industry      -    21.6o

The table above shows the employment distribution in a town with the share of the different pie chart. Total number of workers in the town is 25,000.
What is the total number of workers in the petroleum industry?