Average (SSC) (Part-3)

Total Questions: 50

11. A class of 30 students appeared in a test. The average score of 12 students is 60, and that of the rest is 80. What is the average score of the class? [SSC CGL 25/09/2024 (3rd Shift)]

Correct Answer: (d) 72
Solution:

12. In a class of 150 students (boys and girls only), the girls are 60. The average weight of boys is 52 kg and that of girls is 48 kg. What is the average weight (in kg) of the whole class? [SSC CGL 26/09/2024 (1st Shift)]

Correct Answer: (a) 50.4
Solution:

13. The average monthly expenditure of a family was ₹2,500 during the first 4 months, ₹2,750 during the next 5 months and ₹3,550 during the last 3 months of a year. If the total saving during the year was ₹5,500, what was the average monthly income of the family? [SSC CHSL 02/07/2024 (2nd Shift)]

Correct Answer: (d) ₹3,325
Solution:

14. In June, Rohit's bank account balance is ₹5,000 for 25 days, ₹20,000 for 2 days and ₹1,500 for 3 days. What is the average balance (in ₹) in Rohit's bank account in June? [SSC CHSL 02/07/2024 (4th Shift)]

Correct Answer: (a) 5650
Solution:

15. The salaries of T in twelve months of a year are: ₹12,000, ₹12,000, ₹12,000, ₹15,000, ₹15,000, ₹15,000, ₹21,000, ₹21,000, ₹21,000, ₹30,000, ₹30,000, ₹30,000. The average salary of T per month in ₹ is ______ . [SSC CHSL 03/07/2024 (2nd Shift)]

Correct Answer: (a) 19500
Solution:

16. If the average of 50 numbers N₁, N₂_________N₅₀ is M. Then the average of the numbers N₁-100, N₂-100,__________N₅₀-100 will be: [SSC CHSL 03/07/2024 (3rd Shift)]

Correct Answer: (b) M-100
Solution:

17. In a college, the average weight of 40 boys in a section among 72 students is 33 kg and that of the remaining students is 15 kg. What is the average weight of all the students in the section? [SSC CHSL 04/07/2024 (2nd Shift)]

Correct Answer: (b) 25 kg
Solution:

18. If the average of a number and its reciprocal is 2, then the average of its cube and its reciprocal is equal to: [SSC CHSL 04/07/2024 (3rd Shift)]

Correct Answer: (d) 26
Solution:

19. A man bought 4 books for ₹50 each, 5 books for ₹60 each and 6 books for ₹70 each. The average cost of a book for the man is (round up to two decimal places): [SSC CHSL 04/07/2024 (4th Shift)]

Correct Answer: (a) ₹61.33
Solution:

20. Abhishek's marks in Mathematics were incorrectly entered as 93 instead of 63. Due to this, the average marks of the class in Mathematics got increased by 0.5. How many students were there in the class? [SSC CHSL 05/07/2024 (1st Shift)]

Correct Answer: (b) 60
Solution: