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Civil Service Commission Professional or Sub-Professional Reviewer - Page 42/159

Mathematics Test IV - Page 42

________33.  (a2 - 4b2) c  is equivalent to ac + _________ ?
  1. 2bc
  2. -2bc
  3. 2b
  4. -2b
________34. In a certain class the ratio of boys to girls is 4 : 5. If the class has 54 students, how many are girls ?
  1. 24
  2. 30
  3. 12
  4. 27
_________35. Solve for x : ax = bx + cx - d,       a ≠ b ≠ c.

a.        d       
     a - b - c


b.        d       
     b - a - c


c.        d       
     b + c - a


d.        d       
     b - c - a

__________36. The ratio of men athlete to women in an athletic meet is 5 : 3 and the total number of athlete is 2, 400, how many additional women athlete would have to join to make the ratio of men to women 1 : 1 ?
  1. 6
  2. 400
  3. 600
  4. 1, 200
Civil Service Reviewer Post 42/159