Average (Railway Maths) (Part – III)

Total Questions: 35

11. In order to succeed in a competition, Somi needs an average score of 80 in four exams. His score in the first three examinations is 71, 81 and 91. How many scores should he get in the fourth test to succeed in the competition? [RPF Constable 18/01/2019 (Evening)]

Correct Answer: (a) 77
Solution:

12. The average of 7 numbers is 75. After removing any one number, the average remains the same. Find out the deleted number. [RPF Constable 19/01/2019 (Morning)]

Correct Answer: (d) 75
Solution:

13. The expenditure of a company was Rs. 43,500 during the first quarter of the financial year, Rs. 46,500 during the second quarter of the financial year and during the third quarter of the financial year was Rs. 57,600. If the average quarterly expenditure during the entire financial year is Rs. 54,075, then find out the expenditure for the last quarter of the financial year. (In rupees) [RPF Constable 19/01/2019 (Morning)]

Correct Answer: (c) 68,700
Solution:

14. A gift box contains 10 bracelets. The average weight of the first 4 rings is 30 gm and the average weight of the remaining 6 rings is 31 gm. Find the total average weight (in gm) of all the rings. [RPF S.I. 19/12/2018 (Morning) ]

Correct Answer: (d) 30.6
Solution:

15. Dravid distributes 350 gifts among 4 children. The number of gifts received by the first child, double the number of gifts received by the second child, thrice the number of gifts received by the third child and four times the number of gifts received by the fourth child. How many gifts did the first child receive? [RPF S.I. 19/12/2018 (Morning) ]

Correct Answer: (a) 168
Solution:

16. An English company based on a subsidiary project has 505 male and 505 female workers. The average productivity of all the employees is 55 calls/day. If a male worker receives 55 calls/day, then what will be the number of calls received by female workers per day? [RPF S.I. 19/12/2018 (Morning)]

Correct Answer: (a) 55
Solution:

17. A gift box contains 10 bracelets. The average weight of the first 4 bracelets is 33 grams and the average weight of the remaining 6 bracelets is 34 grams. Find the total average weight (in grams) of all the bracelets. [RPF S.I. 19/12/2018 (Evening)]

Correct Answer: (a) 33.6
Solution:

18. The average weight of 97 notebooks kept in a box is 9.7 kg. By adding 1 more notebook to the box, its average weight becomes 9.8 kg. Find the weight of the new notebook. [RPF S.I. 19/12/2018 (Evening)]

Correct Answer: (b) 19.5 kg

19. A gift box has 10 bangles. The average weight of the first 4 bangles is 57 gms and the average weight of the remaining 6 bangles is 58 gms. Tell the average weight of all bangles (in grams). [RPF S.I. 05/01/2019 (Morning)]

Correct Answer: (c) 57.6
Solution:

20. There is 10 rings in a gift box. The average weight of the first 4 rings is 39 grams and the remaining 6 rings have an average weight of 40 grams. Get the average weight of the total rings. (in gm) [RPF S.I. 06/01/2019 (Morning)]

Correct Answer: (c) 39.6
Solution: