An architect notices that the scale on a blueprint he is using has been torn off. However, he sees that a 12.5-ft. wall that has been built is 5 in. long on the blueprint. What is the scale for this blueprint?

The scale is : 1 in : 2.5 ft

Step-by-step explanation:

An architect notices that the scale on a blueprint he is using has been torn off.

However, he sees that a 12.5-ft. wall that has been built is 5 in. long on the blueprint.  

Let the scale be x

So, scale = x  = 12.5/5 2.5

5/12.5 =1/x

So, the answer is : 1 in : 2.5 ft

Hope this helps, have a nice day! :D

part a: 1.08

part b: 27.59