Question

Find the value of $x$ if $x:4and6:8$ are equivalent ratios.
(2 marks)

Answer 1

If $x:4and6:8$ are equivalent ratios. Then
$x:4=6:8\Rightarrow \frac{x}{4}=\frac{6}{8}$ [1 mark]
$\Rightarrow x=\frac{6\times 4}{8}=3$
$\therefore x=3$ [1 mark]