The average marks of a student in six subjects is 94. After re-evaluation in three subjects, the marks were changed to 89 from 75, 90 from 82, and 88 from 80. In the remaining subjects, the marks remained unchanged. Find the new average marks.

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.