Question

How many metres are there in one and three quarter killometres

Answer 1

We know there are 1000 meters in 1 kilometer, KILO=1000.

so, how many in 3/4 km?

$\bf \begin{array}{ccll} meter&km\\ \text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\ 1000&1\\\\ m&\frac{3}{4} \end{array}\implies \cfrac{1000}{m}=\cfrac{1}{\frac{3}{4}}\implies \cfrac{1000}{m}=\cfrac{\frac{1}{1}}{\frac{3}{4}}\implies \cfrac{1000}{m}=\cfrac{1}{1}\cdot \cfrac{4}{3} \\\\\\ \cfrac{1000}{m}=\cfrac{4}{3}\implies \cfrac{1000\cdot 3}{4}=m$