BECE Mathematics 2025 Objective — Question 78
Question 78 of 120 from the Basic Education Certificate Examination (Junior WAEC) (BECE) Mathematics 2025 Objective paper, with the correct answer and a full explanation.
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Solve the equations a + 10b = 6 and 5a − 10b = 18 simultaneously.
- A. a = −4, b = −1/5
- B. a = −4, b = 1/5
- C. a = −1/5, b = 4
- D. a = 1/5, b = 4
Explanation
Add: 6a = 24 → a = 4; then 10b = 2 → b = 1/5.
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