Question

A room is $11.5$ m long and $6.3$ m wide. Its floor is to be covered with rectangular tiles of size $23$ cm by $9$ cm. Find the total cost of tiling the floor at the rate of Rs. $4.25$ per tile.

• A. Rs. $15725$
• B. Rs. $14800$
• C. Rs. $16795$
• D. Rs. $14875$

Answer 1

Answer: (D)

Rs. $14875$

Area of room $\to$ Length X Breadth

Area of room $\to$ $1150$ $\times$$630$ $\to$ $724500$ sq. cm

Area of $1$ tile $\to$ $23$$\times$$9$ $\to$ $207$ sq. cm

Number of tiles required $\to$ $\frac{Areaofroom}{Areaoftile}$

Number of tiles required $\to$ $\frac{724500}{207}$ $\to$ $3500$

Cost of tiling $\to$ (Number of tiles) $\times$ (Cost of 1 tile) $\to$ $3500$$\times$$4.25$ $\to$ $14875$