Quantitative Aptitude: Data Interpretation Questions for RRB Clerk – Set 74

Directions (1-5): Study the following table to answer the questions given below it. Table shows the percentage of appeared and qualified candidates in a competitive examination from different institutes.

1. What is the ratio of the qualified candidates from institutes A, B and C together to the appeared candidates from institutes D, E and F?
   A) 250:829
   B) 260:987
   C) 129:652
   D) 221:458
   E) None
   
   View Answer

   Option B
   Solution:
   (16+18+18) 52% of 10000 : (10+12+25) 47% of 42000
   52 * 100 :47 * 420
   260:987
   
2. What per cent of the candidates from institute ‘E’ has been declared qualified out of the total candidates appeared from this institute? (approximately)
   A) 36
   B) 40
   C) 39
   D) 38
   E) None
   
   View Answer

   Option C
   Solution:
   12% of 42000 100
   20% of 10000 ?
   ==> 126 100
   50 ?
   5000/126=39 (approx.)
   
3. What is the approximate percentage of students qualified with respect to those appeared from the institutes B and C together?
   A) 23
   B) 22
   C) 20
   D) 21
   E) None
   
   View Answer

   Option A
   Solution:
   38% (20+18) of 42000 100
   36% (18+18) of 10000 ?
   133 100
   30 ?==> 3000/133=23
   
4. Which institute has the highest percentage of candidates qualified with respect to those appeared?
   A) F
   B) D
   C) E
   D) A
   E) None
   
   View Answer

   Option C
   Solution:
   A: 15% of 42000 100
   16% of 10000 ? == 25.3%
   B: 20% of 42000 100
   18% of 10000 ? ==21.4%
   C: 18% of 42000 100
   18% of 10000 ? ==23.8%
   D: 10% of 42000 100
   12% of 10000 ? ==28.5%
   E: 12% of 42000 100
   20% of 10000 ? ==39.6%
   F: 25% of 42000 100
   16% of 10000 ? ==15.2%
   
5. What is the average number of appeared candidates from the institutes A, B and F together?
   A) 7820
   B) 7600
   C) 8325
   D) 8400
   E) None
   
   View Answer

   Option D
   Solution:
   [(15+20+25)% of 42000]/3
   (60% of 42000) /3
   25200/3=8400
   

Directions (6 – 10): Study the following table carefully to answer the questions that follow:

6. What is the total marks obtained by A in all the subjects?
   A) 448
   B) 580
   C) 470
   D) 360
   E) None
   
   View Answer

   Option A
   Solution:
   100% of 60 + 80% of 40 +50% of 130 + 90% of 150 + 90% of 120 + 60% of 80
   60+32+65+135+108+48=448
   
7. What is the average marks obtained by these seven students in history ? (rounded off)
   A) 28.25
   B) 32
   C) 29.14
   D) 26
   E) None
   
   View Answer

   Option C
   Solution:
   80+70+70+60+90+60+80=510
   Total % ge 700
   Then (510/700)*40
   (51/7)*4=29.14
   
8. How many students have got 60% or more marks in all the subjects?
   A) 1
   B) 2
   C) 3
   D) Cannot be determined
   E) None
   
   View Answer

   Option B
   Solution:
   2. (In His and Maths)
   
9. What is the overall Percentage of C?
   A) 75
   B) 64
   C) 80
   D) 68
   E) None
   
   View Answer

   Option A
   Solution:
   C’s Percentage
   90% of 60+70%of 40+60%of 130+90%of 150+70%of 120+70%of 80
   =54+28+78+135+84+56=435.
   Max mark= 580
   (435/580 )*100=75.
   
10. In which subject is the overall percentage the best?
    A) History
    B) Social
    C) Maths
    D) Science
    E) None
    
    View Answer

    Option C
    Solution:
    Eng =[500(Total%ge) /580(Max mark)]*100 =86.2
    His =(510/580)*100=87.9
    Comp=(416/580)*100=71.7
    Maths=(570/580)*100=98.2
    Science=(510/580)*100=87.9
    Social=(495/580)*100=85.3
    The overall %ge of Maths subject is the best.

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