WAEC Mathematics 2014 Question 2

Question 2

Number Bases

If 23x = 325, find the value of x.

  1. A.7
  2. B.6
  3. C.5
  4. D.4
Show the answer and explanation

Answer: A (7)

Explanation

2x + 3 = 3 × 5 + 2 = 17, so 2x = 14 and x = 7.