# Josh wants to add a model of a tree to his model railroad layout. How big should the model tree be if the actual tree is 315 inches and the scale factor is 1:90?

##### 1 Answer

Nov 14, 2016

#### Answer:

The model tree will be

#### Explanation:

You can use direct proportion for this as the model and the real tree represent similar figures with their dimensions being in the same ratio as the scale given.