Question

An architect is constructing a model building by using a ratio os 1:300. If the height of the scale model is 3 1/2 inches what is the height in yards

Answer 1

`\bf \cfrac{model}{actual}\qquad 1:300\qquad \cfrac{1}{300}\qquad \qquad \cfrac{3(1)/(2)}{a}=\cfrac{1}{300}\implies \cfrac{(3\cdot 2+1)/(2)}{a}=\cfrac{1}{300} \\\\\\ \cfrac{\quad (7)/(2)\quad }{a}=\cfrac{1}{300}\implies \cfrac{\quad (7)/(2)\cdot 300\quad }{1}=a\implies 1050=a`