New Workshop on Job Profile of RBI Grade B Officer by Susheel Ragade sir

Register

Question

In an examination, the average marks obtained by the students is 40. After correcting the quantitative mistakes, the average of 50 students is reduced to 25 from 40 and the overall average of the student is reduced to 30. Then find the total number of students who participated in that examination.

A 80

B 70

C 75

D 90

Download PDF Practice Next

More Average Questions

The average age of a class of 20 girls is 15 years. If 5 new girls having average age of 10 years join the class, then the average age of the class becomes:
The average age of a group of persons going for tour to Shimla is 22 years. 30 new persons with an average age of 8 years join the group and their average age becomes 12 years. The number of persons initially going for tour is?
The average age of a class of 25 girls is 20 years. If 7 new girls having average age of 12 years join the class, then the average age of the class becomes:
The average of 24 numbers is 48. If 5 is added to each number, then the new average will be:
A candidate just passed by getting 60 answers correct by attempting 132 of the total questions. Find the total number of questions in the examination if a candidate needs 40% marks. (All questions carry equal marks)
The batting average for 40 innings of a cricket player is 50 runs. His highest score exceeds his lowest score by 172 runs, If these two innings are excluded, the average of the remaining 38 innings is 48 runs. The highest score of the player is
In an Aerobic class, the average age of all the members was 54.5 years, 11 members left the class and 7 new members joined. If the average age increased by 3 years and the total age decreased by 140, what was the number of members in the class initially?
A bowler gives 15 runs per wicket. He gives 30 runs and takes 5 wickets in a last match after which his average becomes 13.5 runs per wicket. How many wickets had been taken by him till the last match?
Average age of company A is 24 years and average age of both companies A and B is 12 years. If the ratio of number of employees in company A and B is 3:4, then what is the average age of company B?
The average age of 32 children and their teacher's age are 28 years. If the teacher's age is excluded, the average reduces by 1. What is the teacher's age?

Relevant for Exams:

Ministry of Defence

×