Question

The scale is evenly balanced. explain how you could find the weight ( w ) of one turtle.

Answer 1

The weight of a turtle equals to 1+7=8unit. Remove 4 from each side since they both have one, now leaving 3 turtles on one side, whereas the other side has 3(1+7). Divided each side by 3, so one turtle has a weight of 8unit.

Answer 2

count all of the weight on the right side, subtract 4 pounds from both sides, and divide it by 2.

Explanation: