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1956 AMC 12 Question 45

AMC12 · 1956 AMC 12

Question 45

A wheel with a rubber tire has an outside diameter of $25$ in. When the radius has been decreased a quarter of an inch, the number of revolutions in one mile will:
  1. be increased about $2\%$
  2. be increased about $1\%$
  3. be increased about $20\%$
  4. be increased $\dfrac12\%$
  5. remain the same