Question 860118
<h3>Algebraic Version</h3>
{{{ModelSize is 1/10 realSize}}}
 
{{{42=1/10*Real Size}}}
Multiply both sides by 10
{{{420=Real Size}}}
The car is <b>420 centimeters</b> long.
<h3>Non-Algebraic Version</h3>
If the model car is 1/10 of the real car, then 10 times the model car must be the size of the real car.
Because the model is 42cm, the real car must be <b>420 centimeters</b> long.