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      Question

      The ratio of arms to a quadrangle is 2: 3: 4: 5, and the

      perimeter is 1050 cm. Find the length of the smallest arm (in cm).
      A 145 Correct Answer Incorrect Answer
      B 150 Correct Answer Incorrect Answer
      C 155 Correct Answer Incorrect Answer
      D 160 Correct Answer Incorrect Answer

      Solution

      ATQ, Let the lengths of the arms be 2x, 3x, 4x, and 5x. The sum of the arms (perimeter) is 2x+3x+4x+5x=1050. Simplify: 14x=1050. Solve for x:x =1050/14=75. The smallest arm is 2x=2Γ—75=150. So, the length of the smallest arm is 150 cm.

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