A man weighing 150 lbs has 30% body fat. How much will this man weigh if he reduces his body fat percentage to 25% while maintaining his lean body mass?

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?