The marks obtained by a student in class 9 in five subjects (each out of 100) are: Social Science = 93, Science = 90, Hindi = 90, English = 95, and Mathematics = 78. What is the overall percentage of marks obtained by the student?

What is the average number of students in B.Tech (220), M.Tech (140), and B.A (4344) courses together?

A class has two sections A and B, which have 36 and 44 students respectively. If the average weight of section A is 40 kg and that of section B is 35 kg, find the average weight of the whole class.