<PRE><B>Question 809232</B>
s = d / t
s + w = 1200 / 2 = 600
s - w = 1200 / 3 = 400
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s = 600 - w
s = 400 + w
600 - w = 400 + w
200 = 2w
w = 100
Answer:
s = 500
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