Averages Problems for SSC CGL

1.

In a class of 37, the overall weight of the students is 743. Can you find the average weight of students in the class?

   A.) 19.08
   B.) 20.08
   C.) 22.09
   D.) 21.08

Answer: Option 'B'

Use the below formula to find the average weight of the class Average Weight = ( Total Weight of Class / Total Number of Students) Average Weight = ( 743/37) = 20.08

2.

Average of five consecutive even numbers is 35. Find the greatest number in these five numbers? 

   A.) 31
   B.) 33
   C.) 39
   D.) 36

Answer: Option 'C'

39

3.

Physics Teacher knows the average score of 55 students in her subject is 49.5. Can you help the physics teacher to find the overall marks obtained by all the students in her subject?

   A.) 2858.63
   B.) 2722.5
   C.) 2994.75
   D.) 2586.38

Answer: Option 'B'

Use the below formula to find the Total, when Average and Total No. of Students is provided Total = Average * Total Students/People Total = Average * Total Number of Students) Average Weight = ( 49.5 x 55) = 2722.5

4.

Average of five consecutive odd numbers is 35. Find the greatest number in these five numbers? 

   A.) 31
   B.) 33
   C.) 39
   D.) 37

Answer: Option 'C'

Let the Consecutive odd numbers are x , x +2 , x + 4 , x+ 6, x+ 8.
Given , Average of fiveConsecutive odd numbers = 35
=> Average = (x + x + 2 + x + 4 + x + 6 + x + 8)/5 = 35
=> (5x + 20) / 5 = 35
=> 5x + 20 = 175
=> 5x = 175 - 20
=> 5x = 155
=> x = 31 ---> which is the first term of the given consecutive odd series.
The numbers are 31, 33, 35 and 37, 39
The greatest number is 39.

5.

The average of 34 numbers is zero. Of them, at the most how many may be greater than zero?

   A.) 34
   B.) 35
   C.) 32
   D.) 33

Answer: Option 'C'

Average of 34 numbers is = 0
Therefore sum of all 34 numbers = 0
It is quite possible that 33 of these numbers may be positive and if their sum is a then 34th number is (-a)

Averages Problems for SSC CGL Download Pdf