Question

The cost of carpeting a room 15 m long with a carpet 75 cm wide, at ₹ 70 per metre, is ₹ 8400. The width of the room is ______.

पर्याय

• 9 m

• 8 m

• 6 m

• 12 m

Answer 1

The cost of carpeting a room 15 m long with a carpet 75 cm wide, at ₹ 70 per metre, is ₹ 8400. The width of the room is 6 m.

Explanation:

Length of the carpet = `"Total cost"/"Rate per metre"`

= `(8400/70) m`

= 120 m

Area of the room = Area of the carpet

= `(120 xx 3/4) m^2`

= 90 m²

Width of the room = `"Area"/"Length"`

= `(90/15) m`

= 6 m