Question

The length of a rectangular room is 13 m and breadth is 9 m. What will be the cost of laying a 0.75 meter wide carpet on its floor at the rate of ₹ 30 per metre?​

Answer 1

Answer:

16380

Step-by-step explanation:

Length of the room = 13 m

Breadth of the room = 9 m

Area of the room = l × b = 13 × 9 = 117 sq m

Let the length of the carpet required = 'l' m

Width of the carpet = 75 cm = 0.75 m

Area of the carpet = Area of the room

⇒ l × 0.75 = 117

⇒ l = 117 / 0.75

⇒ l = 156 m

Length of the carpet required = 156 m

Cost of the carpet per metre = Rs 105

Total cost of the carpet = 156 × 105 = Rs 16380

Answer 2

Answer:

Find the cost of carpeting a room is 13m by 9m with a carpet of width 75cm at the rate of rupees 105 per meter.

Solution:

Area of the room = 13 \times× 9

Area of the carpet = 0.75 \times× l

The area of the carpet must be equal to the area of the room,

13 \times× 9 = 0.75 \times× l

L = 156 m

Cost = 156 \times× 105 = 16380 rupees