Posted by Anonymous on .
A model train is a scale model created from actual measurements. The scale factor for HO or Half Zero model trains is 1:87. A typical engine is 50mm in height and 200mm in length. Determine the actual dimensions of the train engine. Help Please

MATH 
PsyDAG,
If the model is 1, multiply the model dimensions by 87. After multiplying, you also might want to change your units from mm to m.