Question

Six dogs have an average(arithmetic mean) weight of 55 pounds. If the heaviest dog weighs 100 pounds, the lightest dog weighs 5 pounds, and the second-lightest dog weighs 30 pounds, what is the average weight of the other 3 dogs in pounds?

Answer 1

6 * 55 = 330

330 - 135 = 195

Find the average of the 3 dogs.

Answer 2

Anna weighs 54 pounds. Peter weighs x pounds. Write an expression for their combined weight.