Answer:
0.5 is 0.25% of 200.
Explanation:
1 is 1/200 of 200.
Therefore, 0.5 is 1/400 of 200.
1/400 = 0.0025 = 0.25/100
Therefore, 0.5 is 0.25% of 200.
My guess is % 1/400
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