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Pachacha [2.7K]
3 years ago
13

Cynthia Besch wants to buy a rug for a room that is 20 ft wide and 31 ft long. She wants to leave a uniform strip of floor aroun

d the rug. She can afford to buy 350 square feet of carpeting. What dimensions should the rug​ have?
Mathematics
2 answers:
AlekseyPX3 years ago
8 0

Answer:

The dimensions should the rug​ have: length = 25 feet and width of 14 feet.

Step-by-step explanation:

Dimension of the room is 20 ft wide and 31 ft long

Area of rug purchased by Cynthia Besch = A=350 ft^2

Suppose she leave strip of floor which is x ft thick.

Length of the rug= l = (31-x) ft

Width of the rug= w = (20-x) ft

Area of the rug,A = l × w

350 ft^2= (31-x) ft \times (20-x) ft

350=620-51x+x^2

x^2-51x+270=0

x^2-45x-6x+270=0

x(x-45)-6(x-45)=0

(x-45)(x-6)=0

x = 45 , 6

x = 6 (accept), x= 45 ,(reject, larger than length of the room )

Length of the rug= l = (31-x) ft = 31 - 6 ft = 25 ft

Width of the rug= w = (20-x) ft = 20 - 6 ft = 14 ft

lara31 [8.8K]3 years ago
5 0
20*31=620
620/2=310
20/2=10
31/2=15.5
The dimensions should be  10*15.5

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