Average (SSC) (Part-4)

Total Questions: 50

21. In a school, the average height of the students of the tenth standard is 100 cm. The average height of boys is 118 cm, whereas the average height of girls is 95 cm. What is the number of girls in the class if there are 20 boys? [SSC MTS 12/09/2023 (1st Shift)]

Correct Answer: (a) 72
Solution:

5 Units = 20 Boys
18 Units = 20/5 × 18 = 72 girls

22. Sandeep drives a distance of 500 metres to a store in 175 seconds. Then he drives 400 metres to another store in 125 seconds. What is his average speed (in m/s)? [SSC MTS 12/09/2023 (2nd Shift)]

Correct Answer: (b) 3
Solution:

23. In a subject, there are 40 marks for practical and 110 marks for theory. In another subject, the practical marks are 60 and the theory marks are 40. If R gets an average mark of 40 in practical and an average mark of 60 in theory, then his average marks per subject are_______. [SSC MTS 12/09/2023 (3rd Shift)]

Correct Answer: (c) 100
Solution:

24. While calculating the average marks of a class, the score increased by 0.5 when the marks of one student is wrongly entered as 54 instead of 45. The number of students in the class is: [SSC MTS 13/09/2023 (2nd Shift)]

Correct Answer: (b) 18
Solution:

25. S gets 65, 74, 62, 68 and 68 marks in Hindi, English, Mathematics, Physics and Chemistry, respectively. His average marks in Mathematics, Hindi and English are________ more than the average marks in Mathemetics, Physics and Chemistry. [SSC MTS 14/09/2023 (2nd Shift)]

Correct Answer: (d) 1
Solution:

26. The average weight of the group of 12 players increases by 1.5 kg when a player who weighs 63 kg is replaced by a new player. What is the weight of the new player? [SSC CHSL 02/08/2023 (3rd Shift)]

Correct Answer: (b) 81 kg
Solution:

27. The average monthly salary of workers in a factory is ₹6,000. The average monthly salary of 100 technicians is ₹12,000, and the average monthly salary of non-technicians is ₹4,000. Find the total number of workers in the factory. [SSC CHSL 03/08/2023 (1st Shift)]

Correct Answer: (a) 400
Solution:

28. The average age of 25 students in a class is 14 years. Five new students with an average age of 14.6 years join this class. What is the average age of 30 students in the class? [SSC CHSL 07/08/2023 (3rd Shift)]

Correct Answer: (b) 14.1 years
Solution:

29. The average number of runs scored by a cricketer in 42 innings is 30. The difference between his maximum and minimum scores in an inning is 100. If these two innings are not taken into consideration, then the average score of the remaining 40 innings is 28. What are the maximum runs scored by him in an inning? [SSC CHSL 08/08/2023 (3rd Shift)]

Correct Answer: (a) 120
Solution:

30. According to Raghav, his weight is more than 64 kg but less than 74 kg. His sister does not agree with Raghv and she thinks that his weight is more than 60 kg but less than 69 kg. His mother's view is that his weight cannot be more than 68 kg. His father's view is that his weight cannot be more than 67 kg. If all are them are correct in their estimation, then what is the average of different probable weights of Raghav measures (in kg)? [SSC CGL 18/07/2023 (3rd shift)]

Correct Answer: (a) 66
Solution: