Answer: The length of the room on blueprint = 10 feet.
Step-by-step explanation:
Given: On blueprint,
[tex]\dfrac14[/tex] inch = 2 feet
i.e. 1 actual feet = [tex]2\times\dfrac 14 =\dfrac12\text{ inch}[/tex]
If the actual length of 20 feet, the length of a room on blueprint = [tex]20\times\dfrac12\text{ feet}[/tex]
= 10 feet.
Hence, the length of the room on blueprint = 10 feet.
