If the two objects are on the same scale, then as the toy size increases the real size should increase on the same proportion. This means that these two variables, toy size and real car size, are directly proportional and we have to solve the rule of three on the following manner:
[tex]\begin{gathered} \frac{3}{x}=\frac{120}{5} \\ 120\cdot x=3\cdot5 \\ 120\cdot x=15 \\ x=\frac{15}{120}=\frac{1}{8} \end{gathered}[/tex]
The door handle toy size is 1/8 of an inch, which is equal to 0.125 inches.
