Question

A room is 16 m long and 13.5 m broad. Find the cost of covering its floor with 75-m-wide carpet at ₹ 60 per metre. 

Answer 1

As, the area of the floor =`"length"xx"breadth" ` 
=`16xx13.5` 

=`216m^2` 

And, the width of the carpet = 75 m 

So, the length of the carpet required=`"Area of the floor"/"Width of the carpet"`

=`216/75` 

=` 2.88 m` 

Now, the cost of the carpet required=`2.88xx60=172.80` 

Hence, the cost of covering the floor with carpet is `172.80` 

Disclaimer: The answer given in the textbook is incorrect. The same has been rectified above