Average (Railway Maths) (Part – III)

Total Questions: 35

21. In a support project of an English based company, there are 513 male and 513 female employees.The average productivity of all employees is 63 calls per day. The average call organized by the male employee is 63 calls per day. What is the average call per day by female employees? [RPF S.I. 06/01/2019 (Morning) ]

Correct Answer: (a) 63
Solution:

22. There are 10 bangles in a gift box, the first four bangles have an average weight of 47 grams and the remaining 6 bangles have an average weight of 48 grams. Find the average weight of the total bangles. (In grams) [RPF S.I. 06/01/2019 (Afternoon) ]

Correct Answer: (a) 47.6
Solution:

23. A gift box has 10 bangles. The average weight of the first four bangles is 49 gms and the remaining weight of the 6 bangles is 50 gms. Tell the average weight of all bangles. (in grams) [RPF S.I. 10/01/2019 (Morning)]

Correct Answer: (a) 49.6
Solution:

24. The average weight of 63 notebooks kept in a box is 6.3 kg. When a new notebook is placed in the box then the average is 6.4 kg. Specify the weight of the new notebook. (In Kg) [RPF S.I. 10/01/2019 (Morning)]

Correct Answer: (a) 12.7
Solution:

25. The mean score in a test of the 10 boys in a class was 15 while the overall mean of the 25 students in the class was 16.2. What was the mean score of the girls? [RRB ALP 13/08/2018 (Morning)]

Correct Answer: (b) 17
Solution:

26. Samit was given some money to take care of his travel during a 6-day sales drive he had to undertake. However, he had to increase his stay by another 4 days and as a result his average daily travel allowance went down by ₹ 56. What was the amount that was sanctioned to him in the beginning? [RRB ALP 13/08/2018 (Morning)]

Correct Answer: (c) ₹840
Solution:

27. The average of three numbers is 6. The average of the first two is 5 while the average of the last two is 8. The three numbers are: [RRB ALP 13/08/2018 (Afternoon)]

Correct Answer: (c) 2, 8, 8
Solution:

28. There was a group of six students who took a test. Another student joined the group after taking the test later. With her marks included the average score of the group went up by 3. This student has got ________ marks more than the average marks without her being included. [RRB ALP 13/08/2018 (Evening)]

Correct Answer: (a) 21
Solution:

29. What is the mean of first hundred natural numbers? [RRB ALP 14/08/2018 (Afternoon)]

Correct Answer: (c) 50.5
Solution:

30. Four numbers A, B, C and D are such that their overall average is 16. The average of A and B is 9.5. The average of C and D is: [RRB ALP 17/08/2018 (Morning) ]

Correct Answer: (a) 22.5
Solution: