The numerical value of area of a rectangular field is 90 times the numerical value of its breadth. If the perimeter of the filed is 240m, what is the breadth of the field ?

  • 60m
  • Data provided are not adequate to answer the question
  • 30m
  • 20m
  • 15m
  • Explanation:

    Area of rectangular field= L×B

    ∴ L × B = 90×B ⇒ L =90m

    Perimeter of the field = 2(L+B)

    ∴ 2(L+B) = 240

           L+B = 120

    ∴ 90+B=120

             B=120-90

               =30m

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