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Tuesday, March 5, 2013

Civil Service Commission Professional or Sub-Professional Reviewer - Page 68/159

Mathematics Test I Solution - Page 68

46. What is 1/4 % of 880?

= 1/4 % x 880

= 1/400 x 880

= 880/400

= 2.2 *Ans.

47. What % of 2 and 1/2 is 1/2 ?

Rate =   1/2   x 100%
            2 ½

        =  ½  x 100%
           5/2

        =  1  x  2  x 100%
            2      5

        =  1  x 100%
            5

        = 20% *Ans.

48. 180 is 66  % of what number?

  N = 180

N = 180 ( 3 )
                2

N = 270 *Ans.

49.  of what number is 42 ?

  x N = 42

N = 42 ÷ ⅓ 

N = 42 x 3

N = 126 *Ans.

50. 8 ⅓ - 2  5  = ________?
                   8

8 ⅓ = 25/3

5  = 21/8
    8

25  -  21 
     3       8

8(25) - 3(21) 
           3(8)

200 - 63 
         24

137 
     24

= 5  17  *Ans.
       24

Civil Service Reviewer Post 68/159