Find the length of Roosevelt's moustache on the monument

Question

The actual Mount Rushmore carving was made from a scale with a scale of 1 in = 1 ft. On the model, Teddy Roosevelt's moustache was 1ft and 8in long

Answer 1

1 ft 8 in = 20 in

 

Let x = actual length of the moustache

 

Then (1 in)/(12 in) = (20 in)/ (x in)

 

                      x = 240 in = 20 ft