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If a bottle weighs eight ounces plus half a bottle...
...what is the weight of a bottle and a half?
Puzzle Copyright © Kevin Stone
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Answer
24 ounces.
The bottle weighs 16 ounces.
Reasoning
As a bottle (B) weighs eight ounces plus half a bottle, we can write this as:
B = 8 + 1/2 x B
1/2 x B = 8
B = 16
As the bottle weighs 16 ounces, a bottle and a half weighs 16 + 8 = 24 ounces.
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