Reviewer Page Guides

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159

Civil Service Commission Professional or Sub-Professional Reviewer - Page 79/159

Mathematics Test II Solution - Page 79

41. If 3/8 of a certain number is 2/5, what is 3/4 of that same number?

 3 x =  2 
 8        5

    x =  2  ( 8 )
           5     3

    x =  16 
           15

 3  x  =  3  ( 16 )
 4          4    15

 3  x  =  4  *Ans.
 4          5

42. A bus travels 240 kilometers at 60 kph and then returns at 40 kph. What is the average speed in kilometers per hour for the round trip?

t1 = distance / rate
    = 240 km / 60 kph
    = 4 hrs.

t2 = distance / rate
    = 240 km / 40 kph
    = 6 hrs.

rate =  total distance 
              total time

       =  240 + 240 
               4 + 6

       =  480 
            10

       = 48 km/hr *Ans.

43. Mr. Albelda drives his car at the rate of 60 miles per hour. What is his rate in feet per second?

5280 ft. = 1 mile

rate = 60  mi  x      1 hr      x  5280 ft
                hr      3600 sec      1 mile

       =  60 (5280)    ft  
               3600      sec

       = 88  ft  *Ans.
              sec

44. What is 0.05 percent of 6.5 ?

= 0.05% x 6.5

= 0.0005 x 6.5

= 0.00325 * Ans.


45. At Rosa Alvero Street, in Loyola Heights there are 8 towns houses and 52 private individual homes. What is the ratio of town houses to private individual homes?

 8  =   8 /  4 
52     52 / 4

     = 2 / 13 or 2 : 13 * Ans.

Civil Service Reviewer Post 79/159