waecmaths question:
A sum of N18, 100.00 was shared among 5 boys and 4 girls, with each boy taking N20.00 more than each girl. Find a boy’s share
Option A:
N1, 820.00
Option B:
N 2,000.00
Option C:
N2,020.00
Option D:
N2,040.00
waecmaths solution:
$\begin{align} & Boys:\text{ }girls \\ & x+20:x \\ & \text{The total money share will be } \\ & 5(x+20)+4x=18,100 \\ & 5x+100+4x=18,100 \\ & 9x+100=18,100 \\ & 9x=18,000 \\ & x=2000 \\ & \text{Each girl got }N2,000 \\ & \text{Each boy will get }N2000+N20=N2,020:00 \\\end{align}$
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