CUET Preparation Today
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The value of x (length of rectangular field) is : |
150m 400 m 200 m 320 m |
200 m |
Let length = x let breadth = y from question $(x-50)(y+50)=xy$ so $xy-50x+50y-2500=xy$ $x-y=50$ ....(1) $(x-10)(y-20)=xy-5300$ $⇒xy-20x-10y+200=xy-5300$ $2x+y=550$ ...(2) eq. (2) + eq. (1) $⇒3x=600⇒x=200m$ |
