WAEC - Mathematics (2013 - No. 43)
The pie chart shows the distribution of 600 mathematics textbooks for Arts, Business, Science and Technical Classes. How many textbooks are for the technical class?
100
150
200
250
Spiegazione
Arts = 90o business = 75o, science = 45o
Technical 360o - (90o - 75o + 45o) = 360o - 210o
Technical = 150o
textbooks for technical class = \(\frac{150^o}{360^o}\) x 600
= 250
Technical 360o - (90o - 75o + 45o) = 360o - 210o
Technical = 150o
textbooks for technical class = \(\frac{150^o}{360^o}\) x 600
= 250