Question

Priya’s hall is covered with 60 identical square tiles one unit in length. She decides to change the tiles, and tile the hall with identical square tiles, measuring 2 units in length. How many tiles will she need to tile the hall?
With the working pls

Answer 1

Answer:

1 unit length = 60 tiles

2 unit length = x tiles

x = 60x2

x = 120 tiles are required.

Answer 2

Answer:

15 tiles

Step-by-step explanation:

If 60 tiles are required when 1 tile's length = 1 unit then:

A of 1 square tile = 1 x 1 = 1

So, obviously, area of room is 60 square units. And therefore, 60/1 = 60 tiles WERE required.

Now, if the length of each square tile is 2 units,

A of 1 square tile = 2 x 2 = 4

So, new number of tiles required to cover the room's area, i.e. 60 square units, is 60/4 = 15 tiles.

Therefore, the NEW number of tiles required is 15.

Hope it helps! :)