<PRE><B>Question 825483</B>
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s = d/t
d = s*t
t = d/s
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part 1:
t1 = (1/3)d/v
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part 2:
t2 = (2/3)d/2v
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total trip average speed:
t = t1 + t2
s = d/t
s = d/( (1/3)d/v + (2/3)d/2v )
s = d/( (1/3)d/v + (1/3)d/v )
s = d/( (2/3)d/v )
s = 1/( (2/3)/v )
s = v/(2/3)
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answer:
s = (3/2)v
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Solve systems of linear equations up to 4-equations 4-variables:
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