Gabriella wants to tile room with an area 320 square feet. The width of the room is 4/5 it's length. What are the length and the width of the room?

An area ... 320 square feet

the width ... w = 4/5 * l

the length ... l

If you would like to know what are the length and the width of the room, you can calculate this using the following steps:

320 = w * l

320 = 4/5 * l * l

320 = 4/5 * l^2 / * 5/4

l^2 = 320 * 5 / 4

l^2 = 400

l = 20 feet

w = 4/5 * l = 4/5 * 20 feet = 16 feet

Result: The length is 20 feet and the width of the room is 16 feet.