JAMB Mathematics 1984 Question 8

The cost of production of an article is made up as follows: Labour ₦70, Power ₦15, Materials ₦30, Miscellaneous ₦5. Find the angle of the sector representing labour in a pie chart.

1. A.210°
2. B.105°
3. C.175°
4. D.150°
5. E.90°.