waecmaths question:
In the diagram, $\left| XR \right|=4cm$, $\left| RZ \right|=12cm,\left| SR \right|=n,\text{ }\left| YZ \right|=m$ and $\overline{SR}\parallel \overline{YZ}$. Find m in terms of n
Option A:
m = 2n
Option B:
m = 3n
Option C:
m = 4n
Option D:
m = 5n
waecmaths solution:
Use similar triangles$\begin{align} & \frac{XR}{XR}=\frac{n}{m} \\ & \frac{4}{16}=\frac{n}{m} \\ & m=4n \\\end{align}$
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