Answer: 270 tiles
The kitchen measures 3 yards by 5 yards
(For easy reference in the answer, length is assumed 3 yards and width 5 yards)
3 yards = 3 x 3 = 9 feet
5 yards = 5 x 3 = 15 feet
There are 2 ways to align the tiles.
--------------------------------------------------------------------------------
Method 1: align the 1/2 ft as the length and 1ft as the width
--------------------------------------------------------------------------------
Number of tiles on the length = 9 ÷ 1/2 = 18 tiles
Number of tiles on the width = 15 ÷ 1 = 15 tiles
Total titles = 18 x 15 = 270 tiles
--------------------------------------------------------------------------------
Method 2: align the 1ft as the length and 1/2 ft as the width
--------------------------------------------------------------------------------
Number of tiles on the length =9 ÷ 1= 9 tiles
Number of tiles on the width = 15 ÷ 1/2 = 30 tiles
Total titles = 30 x 9= 30 tiles
Either way, Fernando needs 270 tiles
--------------------------------------------------------------------------------
Answer: 270 tiles
--------------------------------------------------------------------------------