Answer:
Step-by-step explanation:
My guess is % 1/400
0.5 is 0.25% of 200.
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.
