WAEC Mathematics 2018 Theory — Question 18
Question 18 of 23 from the West African Examinations Council (WAEC) Mathematics 2018 Theory paper, with the correct answer and a full explanation.
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11.(b) The table below shows the distribution of timber production in five communities in a certain year. (i) Draw a pie chart to represent the information. (ii) What percentage of timber produced that year was from Amenfi? (iii) If a tonne of timber is sold at $560.00, how much more revenue would Oda community receive than Bibiani?
Model answer
Total production = 600+900+1800+1500+2400 = 7200 tonnes. Pie chart sectors (×360°/7200): Bibiani 30°, Amenfi 45°, Oda 90°, Wiawso 75°, Sankore 120°. (ii) % from Amenfi = 900/7200×100 = 12.5%. (iii) Oda revenue = 1800×560 = $1,008,000. Bibiani revenue = 600×560 = $336,000. Difference = $672,000.
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