Question

The carpet for a room $6.6m$ by $5.6m$, costs $Rs.3960$ and it was made from a roll $70cm$ wide. Find the cost of the carpet per metre.

Answer 1

We have,
Length of a room $=6.6m$
Breadth of a room $=5.6m$
Area of a room $=$ Length $\times$ Breadth $=6.6m\times 5.6m=36.96m^2$
Width of a carpet $=70cm=0.7m$ [Since, $1m=100cm$]
Length of a carpet $=$ Area of a room

Width of a carpet $=\frac{36.96}{20.7}=52.8m$
Cost of $52.8m$ long roll of carpet $=Rs.3960$
Therefore,
Cost of $1m$ long roll of carpet $=\frac{3960}{52.8}=Rs.75$