WAEC Mathematics 2023 Objective — Question 12
Question 12 of 50 from the West African Examinations Council (WAEC) Mathematics 2023 Objective paper, with the correct answer and a full explanation.
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One-third the sum of two numbers is 12. Twice their difference is 12. Find the numbers.
- A. 21 and 15Correct
- B. 20 and 16
- C. 22 and 14
- D. 23 and 13
Explanation
(x+y)/3=12 → x+y=36. 2(x-y)=12 → x-y=6. Adding: 2x=42 → x=21, y=15.
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