Question
In a school, the average number of books that some numbers of boys have is 80 and average number of books that some numbers of girls have is 50. If each boy have read 5 books then the average numbers of unread books with all the students become 70. The total number of boys is what percentage of the total number of students in that school?
More Average Questions
- The mean weight of 'w' students in a classroom is 42 kg. When the class teacher, weighing 61.5 kg, is added to the group, the average weight increases by 0...
- Average of 20 numbers is 90. Average of first 8 numbers is 125 while average of last nine numbers is 40. If ninth number is 25% less than the tenth number ...
- The average of 9 numbers is 27. One number 45 is replaced by 33. Find the new average.
- The average age of 24 children and their teacher's age are 21 years. If the teacher's age is excluded, the average reduces by 1. What is the teacher's age?
- A class of 30 students appeared in a test. The average score of 12 students is 80, and that of the rest is 75. What is the average score of the class?
- Find the median of the following observation:24, 28, 29, 21, 19, 18, 25, 27, 17, 20, 28, 30, 11, 13
- A cricketer scored 240 runs in his first six matches of a tournament. Find the average runs the cricketer must score in the next four matches so that his a...
- Sum of ages of 80 people is 1600 years. The average age of 30 of them is 18 years and average age of another 30 of them is 14 years. Find the average age o...
- "The average age of all employees in a company is 23.5 years. The average age of male employees is 25.2 years, while the average age of female employees is...
- A store has 40 laptops and 60 tablets. Average cost of each laptop is Rs. 50,000 and that of each tablet is Rs. 25,000. Find the average cost (in Rs.) of a...
Hey! Ask a query
Please enter email id
The email must be a valid email address.
Please enter Mobile Number
Please enter valid Mobile Number
Please enter your Doubt
Think You're Ready for RBI Grade B?
RBI Grade B 2026 Phase 1 Memory Based Paper
- 200 Questions with Detailed Solutions
- Section-wise Coverage (GA, English, Quant & Reasoning)