The sum of the weights of 8 children is 520 pounds. No two children have the same weight. What is the average(mean) weight of he fourth and fifth heaviest children if the mean and median weights of all children are equal?
Math Help Please ! - Steve, Wednesday, December 19, 2012 at 11:31am
mean is 520/8 = 65
so, the weights are
? ? ? (65 65) ? ? ?
the two middle weights add to 130. They are not both 65, but their average is.