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rectangles

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sogmat Master | Next Rank: 500 Posts Default Avatar
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rectangles

Post Tue Dec 23, 2008 10:05 am
The figure shown above represents a modern painting that consists of four differently colored rectangles, each of which has length l and width w. If the area of the painting is 4,800 square inches, what is the width, in inches, of each of the four rectangles

A. 15
B. 20
C. 25
D. 30
E. 40

OA B
IMO E


Bcoz w*3w=4800 thus w =40
what say
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dendude Master | Next Rank: 500 Posts Default Avatar
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Post Tue Dec 23, 2008 10:25 am
IMO Pretty Straightforward,

From the diagram clearly l = 3w
And we know the area of the figure is 4800
i.e l*(l+w)=4800

Plug in value for l over here,
3w*4w=4800
Hence, w = 20

Ans: B

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Thanked by: sogmat

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