We calculate 50% of 16 GB:

50/100 * 16 GB = 0.5 * 16 GB = <<50/100*16=8>>8 GB

That leaves 16 GB - 8 GB = <<16-8=8>>8 GB available on this key.

# Answer

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Question:
On a 16 GB (gigabyte) capacity USB drive, 50% is already busy. Calculate the number of gigabytes still available.
Answer:
Let's think step by step.

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On a 16 GB (gigabyte) capacity USB drive, 50% is already busy. Calculate the number of gigabytes still available.
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