If the mean of the other five numbers is x, then their sum is 5x. The sum of all six numbers is 5x + 15 or 25*6 = 150. We obtain an equation: 5x + 15 = 150, whose solution is x = (150 - 15)/5 = 135/5 = 27.
May 1st, 2015
Studypool's Notebank makes it easy to buy and sell old notes, study guides, reviews, etc.