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Answer:  Five glasses balance one bottle.

In B, notice that one bottle balances one plate and one glass.
Adding one glass to each scale will not disturb the balance.
D indicates that 1 bottle and 1 glass balance two glasses and one plate.

Look at A and D. The jug weighs the same as one plate and two glasses.
C indicates that two jugs balance three plates.
In E, remove two plates from each side of the balance.
We now have one plate balancing four glasses.
In B, remove one plate and substitute four glasses.

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