Average (SSC)

Total Questions: 43

21. The average age of a husband and his wife 3 years ago was 39 years. The average age of the husband, wife and their child 2 years hence will be 34 years. Find the present age of the child. [SSC MTS 11/07/2022 (Afternoon)]

Correct Answer: (a) 12 years

22. In a family of six males and a few females, the average monthly consumption of grain head is 14.4 kg. If the average monthly consumption per head is 20 kg in the case of males and 6 kg in the case of females. Find the number of females in the family? [SSC MTS 11/07/2022 (Morning)]

Correct Answer: (b) 4

23. A is the average marks of a group of 10 students in a class and A+8 is the average of a group of 15 students which includes the group of 10 students as given. The total marks obtained by the group of 10 students is X and the total marks obtained by the group of 15 students is Y. If X : Y = 3 : 5, then the value of A + X + Y is______. [SSC CHSL 30/05/2022 (Afternoon)]

Correct Answer: (d) 1992

24. A retailer opens her outlet on all seven days of the week. It is observed that her average sales for Saturdays and Sundays combined is ₹300, and ₹200 for the remaining five days combined. For a month starting on saturday, it was found that the total sales were ₹7,000. Which among the following months it could be [SSC MTS 05/10/2021 (Morning)]

Correct Answer: (b) April

25. Consider ten consecutive odd numbers starting from 5. Multiply each of them, except the first and the second, with three. What will be the average of the ten numbers so formed? [SSC MTS 5/10/2021 (Morning)]

Correct Answer: (a) 39.6

26. What is the average of numbers from 1 to 50 which are multiples of 2 or 5? (correct to one decimal place) [SSC CGL 24/8/2021 (Evening)]

Correct Answer: (d) 25.8

27. The average weight of students of section A and B having 40 students each is 45.5 kg and 44.2 kg respectively. Two students of section A having average weight 48.75 kg were shifted to B and 2 students of section B were shifted to section A, making the average weight of both the sections equal. What is the average weight (in kg) of the students who were shifted from section B to section A? [SSC CGL 23/8/2021 (Afternoon)]

Correct Answer: (c) 35.75

28. In an examination, the average score of a student was 67.6. If he would have got 27 more marks in Mathematics, 10 more marks in Computer Science, 18 more marks in History and retained the same marks in other subjects, then his average score would have been 72.6. How many papers were there in the examination? [SSC CGL 23/8/2021 (Morning)]

Correct Answer: (a) 11

29. The average monthly salary of 60 employees of a factory is Rs.29900. If two officers are getting Rs.90,000 each and the average salary of 8 supervisors is Rs.65,000, then what is the average salary (in Rs.) of the remaining employees? [SSC CGL 20/8/2021 (Afternoon)]

Correct Answer: (d) 21880
Solution:

30. What is the ratio of the average of first eight prime numbers to the average of first ten even natural numbers? [SSC CGL 16/8/2021 (Afternoon)]

Correct Answer: (a) 1 : 7
Solution: