The balance scale is perfectly balanced when it sits perfectly
The weight of each can of soda is 8 ounces
Represent the weight of the can with x.
On the first side, where there are 2 cans of soda.
The weight is 2x
On the other side, where there is 1 can of soda and 8 ounces of sand
The weight is x + 8
Since the balance scale is perfectly balanced, then we have the following equation
2x = x + 8
Subtract x from both sides
x = 8
Hence, the weight of each can of soda is 8 ounces
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