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WAEC Mathematics 2013 Paper

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Question : 43

Total: 48

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

Solution:

Arts = 90o business = 75o, science = 45o

Technical 360o - (90o - 75o + 45o) = 360o - 210o

Technical = 150o

textbooks for technical class =

\;\frac{150^{\circ}}{360^{\circ}}

x 600

= 250

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