Question 40

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waecmaths question: 

When a number is subtracted from 2, the result equals 4 less than one – fifth of the number. Find the number

Option A: 

11

Option B: 

$\tfrac{15}{2}$

Option C: 

5

Option D: 

$\tfrac{5}{2}$

waecmaths solution: 

$\begin{align}  & \text{Let number be }x \\ & 2-x=\frac{x}{5}-4 \\ & \frac{x}{5}+x=2+4 \\ & \frac{6x}{5}=6 \\ & x=5 \\\end{align}$

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