Question

A room is 13m long and 9 m broad .Find the cost of of carpeting the room with a carpet 75 cm broad at the rate of $65 per metre
The answer in the back of my book is $10140​

Answer 1

Step-by-step explanation:

Area of the room=l×b

=13×9

=117m^2

Let the lenght required of the carpet be = xm

Breadth of the carpet=75cm=0.75m

Area of the carpet=(0.75 × x)m^2

=0.75xm^2

For carpeting the room

Area converted by the carpet=Area of the room

0.75x=117

x=117/0.75

x=156m=length

1m carpet cost=$65

156m carpet cost will be =(156×65)

=$10140