A rectangular garden is to be twice as long as it is wide. If 240 yards of fencing, including the gate, will completely enclose the garden, what will be the length of the garden, in yards? Choose one
A) 40 B) 50 C) 60 D) 80 E) 100
ALTERNATE APPROACH   Backsolving ( Using answer options to reach the correct answer ) can work wonders here if one is fast in calculations.   Given Perimeter is 240   So, 2 ( L + B ) = 240   Or, L + B = 120   Now use the answer options ( Given Length ; Breath will be half the length)   (A) 40   L = 40 ; B = 20   L + b = 60   (B) 50   L = 50 ; B = 25   L + b = 75   (C) 60   L = 60; B = 30   L + b = 90   (80) 80   L = 80; B = 40   L + b = 120   (E) 100   L = 100; B = 50   L + b = 150   Thus you see no, need of any calculations, U can reach the correct option only by checking options ; correct answer will be (80)
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A rectangular garden is to be twice as long as it is wide. If 240 yards of fencing, including the gate, will completely enclose the garden, what will be the length of the garden, in yards?