Question

A rectangular tile floor has a width of 5 meters and a perimeter of 21 meters. Which of these is the length of the floor?

Answer 1

The answer is 5.5 because 5.5 times 2 is 11 and also 5.5 +5.5 +5 +5 = 11+10, which equals to 21 meters.

Answer 2

The perimeter is

21=5+5+L+L

2L=11

L=11/2

Answer: 5.5 meters, last choice