Question

arul is 18 m long and 16 wide find the cost of carpeting the room with a carpet 80 CM broad at the rate of 70 rupees per cent (find the length of carpet)
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Answer 1

Answer:

length of the carpet will be 36000 cm and total cost will be = 36000x70 = 2,520,000 rupees

Step-by-step explanation:

Total area of the room is = 18x16 $m^{2}$ = 288 $m^{2}$ = 2880000 $cm^{2}$

Now, if we want to cover the room with 80 cm wide carpet, length of the strip needed = 2880000/80 = 36000 cm

considering the cost 70 rupees per centimeter, the total cost will be = 36000x70 = 2,520,000 rupees

Answer 2

Answer:

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=15bm

2

(∵ Area of □le=L×b)

Length of the carpet=

cost per mt

total 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