An ice cream store received shipments of ingredients on Tuesday and Wednesday.

An ice cream store received shipments of ingredients on Tuesday and Wednesday. Tuesday's shipment had 6 different packages, with an average (arithmetic mean) of 9 and 2/3 pounds. Wednesday's shipment included 7 packages, weighing an average of 9 and 3/7 pounds. What was the average package weight, in pounds, of the shipments received on both days?

Quiz

Answer/Solution

124/13 pounds

Steps/Work

Solution: Average weight = Total weight/number of packages. The total weight on Tuesday was 6 * (9 and 2/3 pounds), or 58 pounds. The total weight on Wednesday was 7 * (9 and 3/7 pounds), or 66 pounds. The sum of the weights for both days is 66 + 58, or 124 pounds. The average is 124 pounds/13 packages.
Correct answer: E