Question

A building has 4 stories that are each 15 feet high. A scale drawing has the height of the building at 5 inches.

Which of the following is the correct scale?

1:12
1:144
5:60
1:72

Answer 1

Real height = 4 × 15 = 60 ft = 60 × 12 = 720 in.
Scale = drawing : real = 5 in : 720 in = 1 : (720/5) = 1 : 144.

Answer: 1:144.