N140,000 is shared between ABU, Kayode and Uche. Abu has twice as much as Kayode,...
MATHEMATICS
WAEC 2007
N140,000 is shared between ABU, Kayode and Uche. Abu has twice as much as Kayode, and Kayode has twice as much as Uche. What is Kayode's share?
- A. N80,000
- B. N40,000
- C. N20,000
- D. N10,000
Correct Answer: B. N40,000
Explanation
\(Abu = 2x\\
Kayode = x\\
Uche = \frac{x}{2}\\
2x+x+\frac{x}{2}=140,000\\
\frac{7x}{2}=140,000\\
7x = 280,000\\
x=\frac{280,000}{7}\\
x=40,000\)Kayode receives N40,000
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