Question

The area of the floor of a rectangular shape of length $20m$ is $1200c{m}^2$. Carpets of 4 cm $\times$ 6 cm are available. Find how many carpets are required to cover the hall.

• A. $40$
• B. $50$
• C. $60$
• D. None

Answer 1

The correct option is B $50$

The area of the rectangular floor is $1200{cm}^2$.

The dimension of the carpet is $4cm\times 6cm$.

Hence the area of the carpet is $24$ ${cm}^2$.

Let the number of carpets be n.

For the carpets to completely cover the hall

$\Rightarrow n\times 24=1200$

$\Rightarrow n=50$