Previous Year Average Questions for SSC CGL 2017

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Dear Readers, Here We are providing a quant Quiz of 15 Math questions in accordance with the syllabus of SSC CGL. Most of these Questions are Previous Year asked in SSC CGL. It will give you implicit idea of Math Question Paper of SSC CGL 2017.

Q1. The mean of 9 observation is 16. One more observation is included and the new mean becomes 17. The 10th observation is:
(a) 9
(b) 16
(c) 26
(d) 30

Q2. In a class, the average score of girls in an examination is 73 and that of boys is 71. The average score for the whole class is 71.8. Find the percentage of girls.

(a) 40%
(b) 50%
(c) 55%
(d) 60%
Q3. There are in all, 10 balls; some of them are red and the others white. The average cost of all balls is Rs. 28, average cost of red balls Rs. 25 and that of white balls is Rs. 30, the number of white balls is:
(a) 3
(b) 5
(c) 6
(d) 7

Q4. The average mathematics marks of two Sections A and B of class IX in the annual examination is 74. The average marks of Section A is 77.5 and that of Section B is 70. The ratio of the number of students of Section A and B is:
(a) 7 : 8
(b) 7 : 5
(c) 8 : 7
(d) 8 : 5
Q5. The mean weight of 34 students of a school is 42 kg. If the weight of the teacher be included, the mean rises by 400 grams. Find the weight of the teacher (in kg.)
(a) 55 kg
(b) 57 kg
(c) 66 kg
(d) 56 kg
Q6. On mixing two classes A and B of students having average marks 25 and 40 respectively, the over all average obtained is 30. Find the ratio of the students in the classes A and B.
(a) 2 : 1
(b) 5 : 8
(c) 5 : 6
(d) 3 : 4
Q7. 4 boys and 3 girls spent Rs. 120 on the average, of which boys spent Rs. 150 on the average. Then the average amount spent by the girls is:
(a) Rs. 80
(b) Rs. 60
(c) Rs. 90
(d) Rs. 100
Q8. There are two groups A and B of a class, consisting of 42 and 28 students respectively. If the average weight of group A is 25 kg and that of group B is 40 kg, find the average weight of the whole class.
(a) 69 kg
(b) 31 kg
(c) 70 kg
(d) 30 kg
Q9. The average monthly salary of all the employees in an industry is Rs. 12,000. The average salary of male employees is Rs. 15,000 and that of female employees is Rs. 8,000. What is the ratio of male employees to female employees?
(a) 5 : 2
(b) 3 : 4
(c) 4 : 3
(d) 2 : 5
Q10. Average weight of 25 students of a class is 50 kg. If the weight of the class teacher is included, the average is increased by 1 kg. The weight of the teacher is
(a) 76 kg
(b) 77 kg
(c) 74 kg
(d) 75 kg
Q11. The average salary of all staff of a school is Rs. 10,000. The average salary of 20 teaching staff is Rs. 12,000 and that of non-teaching staff is Rs. 5000, the number of non-teaching staff will be
(a) 7
(b) 8
(c) 10
(d) 12
Q12. The average salary, per head, of all the workers of an institution is Rs. 60. The average salary of 12 officers is Rs. 400; the average salary, per head, of the rest is Rs. 56. The total number of workers in the institution is
(a) 1030
(b) 1035
(c) 1032
(d) 1020
Q13. The average marks obtained by 40 students of a class is 86. If the 5 highest marks are removed, the average reduces by one mark. The average marks of the top 5 students is
(a) 92
(b) 96
(c) 93
(d) 97
Q14. In an examination average marks obtained by the girls of a class is 85 and the average marks obtained by the boys of the same class is 87. If the girls and boys are in the ratio 4 : 5, average marks of the whole class (approx.) is closest to
(a) 86.5
(b) 85.9
(c) 86.4
(d) 86.1
Q15. The average weight of first 11 persons among 12 persons is 95 kg. The weight of 12th person is 33 kg more than the average weight of all the 12 persons. The weight of the 12th persons is
(a) 128.75 kg
(b) 131 kg
(c) 128 kg
(d) 97.45 kg

Solutions




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