Question

Please help me figure this problem out! I believe it’s not hard for some people who have learned it.

Answer 1

$\bf \cfrac{miniature~model}{actual}\qquad 1:25\qquad \cfrac{1}{25}\\\\ -------------------------------\\\\ \cfrac{miniature~model}{actual}\qquad \cfrac{1}{x}=\cfrac{1}{25}\implies \cfrac{1\cdot 25}{1}=x\implies 25=\stackrel{building}{x}~ft$

$\bf \cfrac{miniature~model}{actual}\qquad \cfrac{5}{x}=\cfrac{1}{25}\implies \cfrac{5\cdot 25}{1}=x\implies 125=\stackrel{windmill}{x}~ft \\\\\\ \cfrac{miniature~model}{actual}\qquad \cfrac{8}{x}=\cfrac{1}{25}\implies \cfrac{8\cdot 25}{1}=x\implies 200=\stackrel{street}{x}~m \\\\\\ \cfrac{miniature~model}{actual}\qquad \cfrac{x}{75}=\cfrac{1}{25}\implies x=\cfrac{75\cdot 1}{25}\implies \stackrel{ship}{x}=3~m$