RRB NTPC - Averages (200 Questions with Explanation): Quantitative Aptitude Test

16.

A particular student has scored an average marks of 69.25 in all his 20 subjects. Find the Total Score he has obtained in all his subjects?

   A.) 1385
   B.) 1523.5
   C.) 1454.25
   D.) 1315.75

Answer: Option 'A'

Use the below formula to find the Total, when Average and Total No. of Students is provided Total
= Average * Total Students/People Total = Average x Total Number of Students) Average Weight = ( 69.25 x 20) = 1385

17.

There were 8 students in a particular Class. The class teacher knows the overall height of all the students in the class is 1400. Can you find the average height of students in the class?

   A.) 192.5
   B.) 175
   C.) 183.75
   D.) 166.25

Answer: Option 'B'

Use the below formula to find the average height of students in the class Average Height = ( Total Height of all students in the Class / Total Number of Students) Average Height = ( 1400/8) = 175

18.

Total Marks obtained by a class is 2695 and the average score of the class is 55. Find the Total students in the class?

   A.) 48
   B.) 49
   C.) 50
   D.) 51

Answer: Option 'B'

Use the below formula to find the Total, when Average and Total No. of Students is provided Total no of students = Total Marks / Average Marks Total No. of students = ( 2695 / 55) = 49

19.

In the first 10 overs of a cricket game, the run rate was only 3.2. What should be the run rate in the remaining 40 overs to reach the target of 282 runs?

   A.) 6.25
   B.) 7.5
   C.) 5.625
   D.) 8.635

Answer: Option 'A'

Required Run rate = ( 282 - ( 3.2 x 10 ) )/ (40) = ( 250) /(40) = 6.25

20.

In a class of 19, the overall weight of the students is 1024. Can you find the average weight of students in the class?

   A.) 53.89
   B.) 56.58
   C.) 51.2
   D.) 59.28

Answer: Option 'A'

Use the below formula to find the average weight of the class
Average Weight = (Total Weight of Class / Total Number of Students)
Average Weight = (1024/19) = 53.89

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