Question

In the scale used on a blueprint,1/4 inch represents 2 feet.On the blueprint,what is the length of a room with an actual length of 20 feet?

Answer 1

You would have to multiply 2 feet by 10 to get 20 feet, so multiply 1/4 by 10 to get 5/2 inches. The length of a 20 ft. room on a blueprint would be 5/2 or 2.5 inches.

Answer 2

Answer: Option 'd' is correct.

Explanation:

Since we have given that

In the scale used on a blueprint,

`(1)/(4)\ inch=2\ feet`

Length of a room = 20 feet

We need to find the Length of room in a blue print.

We will use "Unitary method":

`2\ feet=(1)/(4)\ inch`

`1\ feet=(1)/(8)\ inch`

So,
`20\ feet=(1)/(8)* 20=2.5\ inches`

Hence, Option 'd' is correct.