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Civil Service Commission Professional or Sub-Professional Reviewer - Page 58/159

Mathematics Test V - Page 58

________46. If 8 men can plant 288 trees in one day, how many trees can 12 men plant in 5 days?
  1. 432
  2. 960
  3. 1,800
  4. 2,160
________47. If the length of a rectangle is increased by 25% and its width is decreased by 20%, what happens to the area of the rectangle?
  1. increase by 5%
  2. decrease by 5%
  3. increase by 45%
  4. no change
________48. The formula for the volume of a sphere is V = 4/3 π3. If the radius (r) is tripled, what will be the ratio of the new volume to the original volume?

  1. 1 : 3
  2. 3 : 1
  3. 9 : 1
  4. 27 : 1
________49. The scale on a map is 1 : 8. If a surveyor reads a certain measurement on the map as 4.6 cm instead of 5.0 cm, what will be the resulting approximate percent error on the full size model?
  1. 4%
  2. 8%
  3. 64%
  4. 93%
________50. In a certain recipe, 225 grams of beef are called for to make 6 servings. If Mrs. Alferez wants to use the recipe for 8 servings, how many grams of beef must she use?
  1. 275 grams
  2. 300 grams
  3. 337.5 grams
  4. 400 grams
Civil Service Reviewer Post 58/159