Question

On a set of blueprints, the length of a building is 16 inches. The actual building is 85 1/3 feet long. Which of the following is the correct scale?

1:64
1:5
1:32
1:12

Answer 1

1 : 64

Explanation:

We require the dimensions to be the same units

1 foot = 12 inches , then

85
`(1)/(3)` feet =
`(256)/(3)` × 12 = 256 × 4 = 1024 inches

Scale is then

16 in : 1024 in ( divide both parts by 16 )

= 1 : 64