Question

A floor of the room 8 m long and 6 m wide is to be covered by square tiles. If each square tile is 0.8 m, find the number of tiles required to cover the floor. Also, find the cost of tiling at the rate of $7 per tile.

• A. 100 tiles, $700
• B. 75 tiles, $525
• C. 60 tiles, $420
• D. 90 titles, $630

Answer 1

The correct option is B

75 tiles, $525

Length of the room = 8 m

Breadth of the room = 6 m

Area of the room = 8 $\times$ 6 m${}^2${Area of room = Area of tiles that are put on the floor of the room.}

= 48 m${}^2$

Area of one square tile = 0.8 m $\times$ 0.8 m= 0.64 m${}^2$

Number of tiles required = $\frac{Areaoffloor}{Areaoftiles}$

= $\frac{48}{0.64}$

= 48 $\times$ $\frac{100}{64}$

= 75 tiles
For 1 tile, the cost of tiling is $7

For 7 tiles, the cost of tiling is $(7 $\times$ 75) = $525