Average SSC GD Questions

SSC GD-Elementary Mathematics

Average MCQ Questions


13.
The average marks obtained by 30 students in a Mathematics test, out of 100, is 76. Inadvertently, the marks of one student were written as 56 instead of 65 and the marks of another student were written as 84 instead of 48. The correct average is:
SSC GD 2021-03.12.2021-1
A.
70%
B.
65%
C.
75.1%
D.
80%
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ANSWER :
C. 75.1%
14.
A student's marks were incorrectly entered as 92 instead of 78. Due to this, the average marks of the class got increased by half. What is the number of students in the class?
SSC GD 2021-03.12.2021-3
A.
32
B.
24
C.
30
D.
28
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ANSWER :
D. 28
15.
The average attendance at a football club fell by 11% in 2015 in comparison to the previous year. If 3190 fewer people went to see the matches, how many went in 2014?
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A.
35090
B.
28000
C.
31900
D.
29000
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ANSWER :
D. 29000
16.
The average of 15 numbers is 55.4. The average of the first 6 numbers is 50 and the average of the next 4 numbers is 60.5. What is the average of the remaining numbers?
SSC GD 2021-03.12.2021-3
A.
55.6
B.
58.5
C.
57.8
D.
59.4
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ANSWER :
C. 57.8
17.
Six years ago, the average age of A, B and C was 29 years. Eight years ago, the average age of A and C was 27 years. What is the present age (in years) of B?
SSC GD 2021-06.12.2021-1
A.
34
B.
36
C.
31
D.
35
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ANSWER :
D. 35
18.
The average weight of 14 persons is 76.5 kg. If 3 more persons of weight 82 kg, 75 kg and x kg join them, then the average weight of all the persons increases by 0.5 kg. What is the value of x?
SSC GD 2021-06.12.2021-3
A.
805
B.
795
C.
81
D.
85
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ANSWER :
C. 81