WAEC Mathematics 2014 Objective — Question 2
Question 2 of 50 from the West African Examinations Council (WAEC) Mathematics 2014 Objective paper, with the correct answer and a full explanation.
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If 23_x = 32_5, find the value of x. (base of first number is x)
- A. 7Correct
- B. 6
- C. 5
- D. 4
Explanation
Given 23_x=32_5: 32_5 = 3×5+2 = 17. 23_x = 2x+3=17, so 2x=14, x=7.
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