Average (SSC) (Part-6)

Total Questions: 50

11. The average of nine consecutive even numbers is 24. What is the average of the smallest three of these 9 given numbers? [SSC MTS 21/07/2022 (Evening)]

Correct Answer: (c) 18
Solution:

12. The average marks of a group of 16 students in a test are reduced by 4 when the topper, who scored 92 marks, is replaced by a new student. What are the marks scored by the new student? [SSC MTS 22/07/2022 (Afternoon)]

Correct Answer: (b) 28
Solution:

13. The average weight of A, B, C and D is 33 kg. C is 12 kg lighter than A, while B is 6 kg heavier than C. D’s weight is 10 kg less than that of C. What is the average weight of A and D? [SSC MTS 25/07/2022 (Morning)]

Correct Answer: (d) 32 kg
Solution:

14. The average of a certain set of ‘b’ numbers is ‘a’, and the average of a certain set of ‘a’ numbers is ‘b’. What is the average of all the numbers taken together? [SSC MTS 25/07/2022 (Morning)]

Correct Answer: (b) 2ab ÷ (a + b)
Solution:

15. The average marks scored by 8 boys is 72. If the scores of three girls are also included, the average marks increases by 3. The average marks scored by the three girls is: [SSC MTS 25/07/2022 (Afternoon)]

Correct Answer: (b) 83
Solution:

16. P₁​ is the average of all prime numbers below 12 and P₂ is the average of all prime numbers between 12 and 30. What is the value of 5P₁ - P₂ ? [SSC MTS 25/07/2022 (Afternoon)]

Correct Answer: (a) 7.8
Solution:

17. The average of P1, P2 and p3 is 50. If the value of P1 is half of the average, then what is the average of P2 and P3 ? [SSC MTS 26/07/2022 (Morning)]

Correct Answer: (d) 62.5
Solution:

18. The average marks of a student in six subjects was initially 110. After re-valuation, in one subject the marks obtained was reduced from 148 to 112, while in the rest of the subjects the marks remained unchanged. What is the new average marks? [SSC MTS 26/07/2022 (Evening)]

Correct Answer: (d) 104
Solution:

19. The average age of a group is increased by 4 years when a person of whose age is 32 years was replaced by a person whose age is 56. Find the number of people in the group. [SSC CHSL 24/05/2022 (Morning)]

Correct Answer: (a) 6
Solution:

20. In the class, there are 29 boys and 21 girls. The average score of boys in Maths is 89, whereas the average score of girls in maths is 91. What is the average of the whole class in maths? [SSC CHSL 24/05/2022 (Morning)]

Correct Answer: (d) 89.84
Solution: