Question

What??? I don’t understand

Answer 1

firstly let's convert the decimals to fractions, so we'll use as many zeros at the bottom as there are decimals and lose the dot, and then check their ratios.

$\bf 1.\underline{75}\implies \cfrac{175}{1\underline{00}}\implies \stackrel{simplified}{\cfrac{7}{4}}~\hfill 0.\underline{75}\implies \cfrac{075}{1\underline{00}}\implies \stackrel{simplified}{\cfrac{3}{4}} \\\\[-0.35em] \rule{34em}{0.25pt}$

$\bf \cfrac{\textit{original image}}{\textit{scale drawing}}\qquad 1.75:0.75\implies \cfrac{1.75}{0.75}\implies \cfrac{~~\frac{7}{4}~~}{\frac{3}{4}}\implies \cfrac{7}{4}\cdot \cfrac{4}{3} \\\\\\ \cfrac{7}{3}\cdot \cfrac{4}{4}\implies \cfrac{7}{3}\cdot 1\implies \stackrel{\textit{scale ratio}}{\cfrac{7}{3}}$

Answer 2

Ah, so it's trying to say what is the difference between the original scale and the scale drawing which I believe is 1.00. I could be incorrect.