Average (SSC) (Part-5)

Total Questions: 50

11. The average of marks obtained by X and Y is 35 less than the average marks obtained by Y and Z. If the marks obtained by Z is 85, what is the marks obtained by X? [SSC CHSL 21/03/2023 (3rd Shift)]

Correct Answer: (b) 15
Solution:

12. Find the average of the cubes of the first five natural numbers. [SSC CGL Tier II (02/03/2023)]

Correct Answer: (c) 45
Solution:

13. The average of 20 numbers is 32. If two numbers are 29 and 31, then what is the average of the remaining numbers (correct up to two decimals)? [SSC CGL Tier II (03/03/2023)]

Correct Answer: (d) 32.22
Solution:

14. The average of the marks of 25 students in a class, in an examination was calculated to be 19. Later, the teacher realized that the marks of two students were taken as 18 and 19 respectively, instead of 14 and 15. Find the new actual average marks of the class. [SSC CGL 01/12/2022 (2nd Shift)]

Correct Answer: (c) 18.68
Solution:

15. A company employed 700 men and 300 women and the average wage was Rs.450 per day. If a man got Rs.50 more than a woman, then the daily wage of the woman is: [SSC CGL 03/12/2022 (3rd Shift)]

Correct Answer: (c) Rs.415
Solution:

16. The average of eight consecutive odd numbers is 48. Find the sum of the fifth and seventh numbers. [SSC CGL 06/12/2022 (3rd Shift)]

Correct Answer: (a)102
Solution:

17. The average weight of apples in a basket is 50 kg. 6 more apples with the average weight of 60 kg are added in the basket. If the average weight of the basket is increased by 5 kg, then find the number of apples in the basket originally. [SSC CGL 07/12/2022 (4th Shift)]

Correct Answer: (b) 6
Solution:

18. A student's marks were wrongly entered as 65 instead of 45. Due to this, the average marks for the class got increased by 1/3. The number of students in the class is: [SSC CGL 08/12/2022 (3rd Shift)]

Correct Answer: (c) 60
Solution:

19. If the average of s numbers is r⁴ and the average of r numbers is s⁴ then find the average of all r + s numbers? [SSC CGL 09/12/2022 (4th Shift)]

Correct Answer: (a) rs(r² + s² - rs)
Solution:

20. The average age of a man and his son is 55 years. The ratio of their ages is 7 : 4, respectively. What will be the ratio of their ages after 6 years [SSC CGL 12/12/2022 (2nd Shift)]

Correct Answer: (d) 38 : 23
Solution: