9514 1404 393
Answer:
42 kg
Step-by-step explanation:
We assume you want 7/9 of the whole amount.
(7/9)·(54 kg) = 7·(54/9 kg) = 7·6 kg = 42 kg
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Additional comment
We're used to seeing problems where a division into a given ratio is required. It is unusual to see a problem asking for a decrease by a ratio. It isn't exactly clear what that means.
Our first interpretation is that the intent is to find the given fraction of the whole. If the intent is to decrease the whole by that fraction, then the result will be 54 -42 kg = 12 kg.
