Aptitude Questions: Data Interpretation Set 39

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Questions Penned by Yogit

Direction: Q(1 –5) Study the following charts and answer the following questions: 

1. What is the % of  number of girls in the school(approx)?
   a) 28
   b) 32
   c) 38
   d) 42
   e) None of these
   
   Answer & Explanation

   Answer – d) 42
   Explanation :
   girls = 3000 – 1750 = 1250, so (1250/3000)*100 = 41.67%
   
   
   
2. How many girls are enrolled in singing and craft together?
   a) 505
   b) 610
   c) 705
   d) 810
   e) None of these
   
   Answer & Explanation

   Answer – a) 505
   Explanation :
   total students in singing and craft = (46/100)*3000 = 1380
   number of boys in singing and craft = (50/100)*1750 = 875
   so number of girls = 1380 – 875 = 505
   
   
   
3. The number of boys enrolled in dancing form what percent of the total number of students in the school?
   a) 12.66
   b) 11.67
   c) 13.67
   d) 14.77
   e) None of these
   
   Answer & Explanation

   Answer – b) 11.67
   Explanation :
   (350/3000)*100 = 11.67%
   
   
   
4. What is the ratio of the number of boys enrolled in swimming to the number of girls enrolled in swimming?
   a) 43:47
   b) 47: 43
   c) 49:47
   d) 47:49
   e) None of these
   
   Answer & Explanation

   Answer – c) 49:47
   Explanation :
   boys = 245 and girls  = 480 – 245 = 235
   
   
   
5. What is the total number of boys enrolled in swimming and drawing together?
   a) 505
   b) 515
   c) 525
   d) 535
   e) None of these
   
   Answer & Explanation

   Answer – c) 525
   Explanation :
   (30/100)*1750 = 525
   
   
   

Direction: Q(6 –10) Study the following graphs and answer the following questions: 

Number of students in different branches in 5 colleges

6. What is the difference between the average number of civil engineers and electrical engineers?
   a) 65
   b) 70
   c) 75
   d) 82
   e) None of these
   
   Answer & Explanation

   Answer – d) 82
   Explanation :
   Total civil engineers = 990 and total electrical engineers = 580
   Now (990 – 580)/5 = 82 (difference between the average number of civil engineers and electrical engineers)
   
   
   
7. In college R, number of mechanical engineers is what percent of civil engineers?
   a) 33.33%
   b) 37.37%
   c) 43.33%
   d) 16.67%
   e) None of these
   
   Answer & Explanation

   Answer – a) 33.33%
   Explanation :
   (75/225)*100 = 33.33%
   
   
   
8. The number of civil engineers is what percent of the total number of mechanical engineers from all college together?
   a) 149%
   b) 139%
   c) 159%
   d) 169%
   e) None of these
   
   Answer & Explanation

   Answer – d) 169%
   Explanation :
   total civil engineers = 990 and total mechanical engineers = 585
   so percent = (585/990)*100 = 169.23%
   
   
   
9. Find the ratio of the number of colleges in which number of electrical engineers is above average and those in which the number is below average?
   a) 2:3
   b) 3:2
   c) 1:4
   d) 4:1
   e) None of these
   
   Answer & Explanation

   Answer – a) 2:3
   Explanation :
   average electrical engineers = 580/5 = 116
   Number of colleges in which electrical engineers are above average = 2 and below average = 3
   
   
   
10. The number of civil engineers in college S is what percent more than the number of mechanical engineers in the same college?
    a) 60%
    b) 62%
    c) 64%
    d) 65%
    e) None of these
    
    Answer & Explanation

    Answer – b) 62%
    Explanation :
    civil engineers = 170. Mechanical engineers = 105
    [(170-105)/105]*100 = 62% (approx)
    
    
    

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