Question
In a school, the average number of books that some numbers of boys have is 120 and average number of books that some numbers of girls have is 90. If each boy has read 5 books, then the average numbers of unread books with all the students become 100. The total number of boys is what percentage of the total number of students in that school?
More Average Questions
- The average age of a group is 40 years. When two members having an average age of 58 years leave the group, the average age drops by 3 years. What was the ...
- There are three distinct numbers ‘m’, ‘n’ and ‘o’. If, m = 210, (m + n) = 510 and (o – n) = 60, then find the average of m, n and o.
- There are three distinct numbers ‘d’, ‘e’ and ‘f’. If, d = 120, (d + e) = 420 and (f – e) = 60, then find the average of d, e and f.
- In a warehouse, the ratio of the number of boxes containing books, clothes, and electronics is 7:5:3, respectively, and the average number of boxes of each...
- The mean of a set of 8 numbers is 80. If the average of the first four numbers and the last two numbers is 90 and 60, respectively, and the ratio of the fi...
- The average of 5 numbers is 28. If one of the numbers is 34, what is the sum of the remaining 4 numbers?
- A man purchases cold-drink for three consecutive years. In the first year, he purchases cold-drink at the rate of ₹ 8.00 per litre, in the second year, at ...
- The average runs scored by a player in a certain number of matches was 32.5. His average gets increased by 1.5 when he scores 100 in his next match. Find t...
- A set contains ten numbers. The average of the first six numbers is (x − 4), and the average of the last three numbers is (x + 2). The average of the entir...
- Consider a group consisting of 16 females with an average age of 25 years and 20 males with an average age of 35 years. What is the approximate average age...
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)