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Civil Service Commission Professional or Sub-Professional Reviewer - Page 72/159

Mathematics Test II Solution - Page 72

14.  3  +  1  +  1  = ___________?
       4      6      8


=  18  +  4  +  3
    24     24    24

=  25 
    24

= 1  1  *Ans.
      24


15. 15  1  - 8  3   = ___________?
            3        4

15 and 1/3 is also = 46/3
8 and 3/4 is also = 35/4

=  46  -  35 
     3        4

=  4(46) - 3(35) 
         3(4)

=  184 - 105 
          12

=  79 
    12

= 6   7  *Ans.
       12

16. 8 inches is what part of a foot?

1 FOOT = 12 INCHES

8 inches = 8 inches x     1 foot   
                                12   inches

             =  8  ft.
                12

             = 2/3 ft. *Ans.

17. If 4 workers can complete 8 identical jobs in 4 days, how long will it take 6 workers to complete 12 such jobs?

k =  (4 workers) 4 days 
                8 jobs

k =  2 workers days 
                 job

No. of days for 12 jobs for 6 workers

N = 2 worker days  x    12 jobs 
               job              6 workers

N = 4 days *Ans.

Civil Service Reviewer Post 72/159