Aphotograph is reduced by a scale factor of 3/8 . if the original length of the photograph was 20 inches, what is the length of the reduced photo?

To solve this problem you must apply the proccedure shown below:

 1. You have that the following information given in the problem above: The photograph is reduced by a scale factor of 3/8 and the original had a length of 20 inches, 

 2- Therefore you have:

 length=20 inches-(20 inches x 3/8)
 length=20 inches-7.5 inches
 length=12.5 inches

 3- Then, as you can see, the answer is: 12.5 inches.