65
Q:

# The average salary of all the workers in a workshop is Rs. 8000. The average salary of 7 technicians is Rs. 12000 and the average salary of the rest is Rs. 6000. The total number of workers in the workshop is :

 A) 20 B) 21 C) 23 D) 24

Explanation:

Lot the total number of workers be v Then,

8OOOv = (12000 * 7) + 6000 (v - 7) <=>  2000v = 42000  <=>  v = 21.

Subject: Average
Q:

The standard deviation of the set {10, 10, 10, 10, 10} is

 A) 0 B) 1 C) 5 D) 10

Explanation:

Filed Under: Average
Exam Prep: Bank Exams

5 780
Q:

If the average of 31, x, 42, 39, 56, 78, 83 and 91 is 58.5, then what is the value of x?

 A) 26 B) 34 C) 58 D) 48

Explanation:

Filed Under: Average
Exam Prep: Bank Exams

2 6904
Q:

The mode and median of the data 8, 6, 8, 7, 8, 6, 8, 7, 6 is

 A) 7 and 8 B) 6 and 7 C) 8 and 7 D) 6 and 8

Explanation:

Filed Under: Average
Exam Prep: Bank Exams

3 804
Q:

The mean of the data 1, 2, 10, 18, 3, 17, 19 is

 A) 7 B) 10 C) 17 D) 70

Explanation:

Filed Under: Average
Exam Prep: Bank Exams

1 507
Q:

If the average age of 20 students in Class-I is 10 years and average age of 25 students in Class II is 12 years, find the average age (in years) of all students.

 A) 11 B) 11.111 C) 10.50 D) 10.85

Explanation:

Filed Under: Average
Exam Prep: Bank Exams

1 894
Q:

20 pens and 46 pencils were purchased for Rs. 235. If the average price of a pencil is Rs. 2.50 then calculate the average price (in Rs.) of a pen.

 A) 6 B) 4 C) 8 D) 12

Explanation:

Filed Under: Average
Exam Prep: Bank Exams

2 664
Q:

The average of two numbers is 10 and the product of two numbers is 96. Find the two numbers.

 A) 3, 32 B) 12, 8 C) 1, 96 D) 24, 4

Explanation:

Filed Under: Average
Exam Prep: Bank Exams

0 5836
Q:

Average of the runs of 133 players of a team is 38. If the average of the runs of the male players is 43 and the average of the runs of the female players is 24, then what will be the ratio of the total runs of male players and the total runs of female players respectively?

 A) 301 : 60 B) 7 : 3 C) 39 : 11 D) 60 : 207