neokeynesian

10-24-2004, 05:56 AM

Question:

An archictect designs a room with a rectangular floor that meets the following requirements:

The length is twice the width

The area is at least 400 square meters

The perimeter is no more than100 meters

If w is the width of the floor, in meters, which of the following must be true for w?

a)15≤w≤20 b) 15≤w≤√398 c) 16⅔≤w≤20

d) √200/3≤w≤25/2 e) √200≤w≤50/3

Answer: E

An archictect designs a room with a rectangular floor that meets the following requirements:

The length is twice the width

The area is at least 400 square meters

The perimeter is no more than100 meters

If w is the width of the floor, in meters, which of the following must be true for w?

a)15≤w≤20 b) 15≤w≤√398 c) 16⅔≤w≤20

d) √200/3≤w≤25/2 e) √200≤w≤50/3

Answer: E