If 23 x = 32 5 , find the value of x
MATHEMATICS
WAEC 2014
If 23x = 325, find the value of x
- A. 7
- B. 6
- C. 5
- D. 4
Correct Answer: A. 7
Explanation
23x = 325
2 \(\times x^1 + 3 \times x^0 = 3 \times 5^1 + 2 \times 5^0\)
= 2x + 3 = 15 + 2
2x + 3 = 17
2x = 17 - 3
2x = 14
x = \(\frac{14}{2}\)
x = 7
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