Question
The average weight of a class of 25 student is 60 KG. If X is student joined the class, than the average weight of whole class increases by (2X – 7)Kg. Find the value of X if the weight of whole class increases by 390 KG.
More Average Questions
- 20 students go for a picnic. 10 of them spent Rs. 64 each on their food and rest spent Rs.4 more than the average expenditure of all 20. What was the total...
- The average number of taxis of three colours (black, white and yellow) in a taxi stand is 144. The number of black taxis is 30 more than that of yellow tax...
- The average weight of 8 people is 75 kg. When three new people with their weights in the ratio 3:4:5 joined the group, the average weight of all the people...
- The average weight of a family of 5 members is 60 kg. If the youngest member dies, the average weight of the family decreases by 2 kg. Find the weight of t...
- The average weight of 36 students in a class is 62 kg. When two new students having weights (m + 8) kg and (m − 6) kg joined, the average weight dropped by...
- A person purchased diesel at Rs. 7, Rs. 10 and Rs. 14 per litre in three successive years. If he spent Rs. 3500 each year on diesel, then find the approxim...
- In an office, the average weight of women is 34 kg and the average weight of men is 30 kg. If the number of women is three times the number of men, what wi...
- The average of 25 numbers is 36. When a new number is added, the average becomes 37. Later, one of the original 25 numbers, which is 30, is removed from th...
- The average marks of 20 students in a class is 40. If the marks of one student scoring 35 are replaced by another student scoring 55, and then each student...
- In a classroom, the combined average age of all students and their teacher is 17 years. The average age of the boys in the class is 13 years. If the teache...
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
