WAEC Mathematics 2024 Theory — Question 7
Question 7 of 13 from the West African Examinations Council (WAEC) Mathematics 2024 Theory paper, with the correct answer and a full explanation.
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7. The table below shows the ages of 20 children in a household. Given that x : y = 1 : 2, find the: (a) values of x and y; (b) mean age of the children. Age: 5, 6, 7, 8, 9, 10 Frequency: 2, (2x-1), (y+2), 4, 2, (y-1)
Model answer
(a) x = 2, y = 4 (b) Mean age = 7.5 years
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