Question

How many canadian dollars can you buy for us$518 if one canadian dollar is worth us $0.74?​

Answer 1

$\bf \begin{array}{ccll} CA(dollar)&US(dollar)\\ \cline{1-2} 1&0.74\\ x&518 \end{array}\implies \cfrac{1}{x}=\cfrac{0.74}{518}\implies 518=0.74x \\\\\\ \cfrac{518}{0.74}=x\implies 700=x$