Four packages have an average weight of 12.5 pounds. What is the minimum possible weight of the heaviest package in pounds if the median is 10 pounds? Choose the correct choice from the following answers
A) 20	B) 19	C) 18	D) 17	E) 16
Let us denote the weights of the packages in pounds by a, b, c, d naming from the lightest one to the heaviest one. The median is 10 pounds. Therefore (b + c) / 2 = 10.   b + c = 20   The average is 12.5 pounds. Therefore (a + b + c + d) / 4 = 12.5.   a + (b + c) + d = 50   a + 20 + d = 50   a + d = 30   The weight a must be no greater than 10, since 10 is the median. Therefore the minimum possible weight of the heaviest package is 30 – 10 = 20 pounds (all the other packages would weigh 10 pounds in this case).   20nswer: 20
<result>A</result>
Four packages have an average weight of 12.5 pounds. What is the minimum possible weight of the heaviest package in pounds if the median is 10 pounds?