Question

the cost of carpeting a room 15 m long with width 75 cm at Rs 80 per metre is Rs 19200. find the width of the room​

Answer 1

Given,

a carpet length=15m

width of carpet=75m

cost of carpet=80Rs. p.m.

Total cost=19,200 Rs.

also, given, to find out the width of the room.

Let, the width of the room be 'b' mt.

∴ Area of the room=L×b=15×b=15bm2

(∵ Area of □le=L×b)

Length of the carpet=cost per mttotal cost=80/19200

Length of the carpet=240mt

as given 'W' of the carpet=75m

Area of the carpet=240×75=18000

Area of the room=Area of carpet

⇒15b=18000

b=15/18000=1200mt

∴ The width of the room=1200mt or 12cm.

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