Question

The length and breadth of a rectangular field are in the ratio 3:2. If the perimeter of the field is 80 m, its breadth (in metres) is- select one: a. 24 b. 18 c. 10 d. 16

Answer 1

let the length of the rectangular field = 3x

let the breadth of the rectangular field = 2x

perimeter = 80m

perimeter of rectangular field = 2(l+b)

80 = 2(3x + 2x)

80 = 2(5x)

80 = 10x

80/10 = x

x = 8

length of rectangular field = 3 × 8 = 24

breadth of rectangular field = 2 × 8 = 16

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Answer 2

Answer:

let the length of the rectangular field = 3x

let the breadth of the rectangular field = 2x

perimeter = 80m

perimeter of rectangular field = 2(l+b)

80 = 2(3x + 2x)

80 = 2(5x)

80 = 10x

80/10 = x

x = 8

length of rectangular field = 3 × 8 = 24

breadth of rectangular field = 2 × 8 = 16

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