If the average number of boys across five schools (A, B, C, D, and E) is 1440 and the average number of girls across these five schools is 1040, then the average number of boys is approximately what percentage more than the average number of girls?

An institution has 5 classes containing 50, 60, 25, 40, and 70 students. The pass percentages of these 5 classes are 20%, 25%, 20%, 10%, and 30% respectively. Find the average number of passed students per class in the institution.

If the Consumer Price Index (CPI) increases from 125 in 1995 to 140 in 1996, what is the annual rate of inflation?