Question

A room is 13 m long and 9m broad.find the cost of carpeting the room with a carpet 75 cm broad at the rate at ₹65 per meter​

Answer 1

Answer:

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Step-by-step explanation:

Given  

Length of the room =13 m

Breadth of the room =9 m

Area of the room = (length \times breadth)

=(13×9) m  

2

 

=117 m  

2

 

Let the length required of the carpet be x m

Breadth of the carpet =75 cm=0.75 m

Area of the carpet =(0.75×x) m  

2

 

=0.75x m  

2

 

For carpeting the room

Area converted by the carpet  = Area of the room

0.75x=117

x=117/0.75

x=156 m

Hence, length of the carpet =15 m

1 m carpet cost = rupees 65

156 m carpet cost will be =(156×65)

= Rupees 10140

Answer 2

Answer:

₹10140

Step-by-step explanation:

Given,

         Length of room = 13m

         Breadth of room = 9m

Area of room = Length x Breadth = 13 x 9 = 117m²

Given,

          Breadth of carpet = 75cm = 0.75m

          Cost of carpet of length 1m = ₹65

Area of carpet of length 1m = Length x Breadth = 1 x 0.75 = 0.75m²

So, 0.75m² of carpet costs ₹65

∴ Cost of carpeting the entire room = $\frac{117}{0.75}*65$ = 156 x 65 = ₹10140

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