Consider a class of 45 students whose average weight is 50 Kgs. M new students join this class whose average weight is n Kgs. If it is known that m + n = 60, what is the maximum possible average weight of the class now?

Q. The average weight of a class of 20 students is 45 kgs. A new student whose weight is 40 kgs replaces an old student of this class. Hence, the average weight of the whole class decreases by 1 kg. The weight of the replaced student is :

Q. The average weight of the students of a class is $60kg$. If eight new students of average weight $64kg$ join the class, the average weight of the entire class becomes $62kg$. How many students were there in the class initially?

Q. The average weight of the students of a class is 60 kg. If eight new students of average weight 64 kg join the class, the average weight of the entire class becomes 62 kg. How many students were there in the class initially ?

Q. In a class of $5$ students, average weight of the $4$ lightest students is $40$ kgs, average weight of the $4$ heaviest students is $45$ kgs. Then the difference between the maximum and minimum possible average weight is

Q. The average weight of all the students in a class is 58 kg, and that the average weight of all the 10 girls of the class is 50 kg. If the average weight of boys is 60 kg, how many students are there in the class?