1.

1). 38 m2). 46 m 3). 30 m 4). 40 m

Answer»

LET the LENGTH be x and BREADTH be y

Area = xy = 160

New length = x + 10

Area = (x + 10) × y = 160 + 40 = 200

⇒ xy + 10y = 200

⇒ 160 + 10y = 200

⇒ y = 4

∴ x = 160/y = 160/4 = 40 m



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