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Match the item with where it belongs in the conventional ratio.

1. Time saved by road users   2. Noise imposed on residents   3. Agency maintenance spending

P. Denominator, as a cost   Q. Numerator, as a benefit   R. Numerator, subtracted as a disbenefit

  • A.1-R, 2-Q, 3-P
  • B.1-Q, 2-P, 3-R
  • C.1-P, 2-R, 3-Q
  • D.1-Q, 2-R, 3-P

Answer: D

Correct answer: 1-Q, 2-R, 3-P

Three items in three different places. Time saved by users is a benefit to the public and goes in the numerator. Noise imposed on residents is a loss to the public and is subtracted in the numerator as a disbenefit. And maintenance spending is an outlay by the agency, so it belongs in the denominator as a cost.

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