Question

fill in the boxes
(i) $\frac{5}{4}=\frac{}{16}=\frac{25}{}=\frac{-15}{}$

Answer 1

Let $\frac{5}{4}=\frac{x}{16}=\frac{25}{y}=\frac{-15}{z}$

$\Rightarrow \frac{5}{4}=\frac{x}{16}$

$\Rightarrow x=4\times 5=20$;

$\frac{5}{4}=\frac{25}{y}$

$\Rightarrow y=5\times 4=20$

and $\frac{5}{4}=\frac{-15}{z}$

$\Rightarrow z=-4\times 3=-12$.