Mary spent 12/24 of her time on an exam. If she spent 10/24 of her time on preparing for the exam, what fraction of her time did she spend on writing the exam?

This is the concept of statistics, given that there are 650 students and all of them read a total of 18,996 pages. we are required to get the average number of pages that they all read; average, otherwise known as the mean is the calculated 'central' value of a set of numbers; the formula for mean is given by; mean=(sum)/(count)in our case: sum=18,996count=650thus; mean=18996/650=29.23here we can conclude that the average number of pages read by each student in the high school was 29.23