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- The seventh grade mathematics scholar education edition Volume II 1 12 answers.
The seventh grade mathematics scholar education edition Volume II 1 12 answers.
Solution: Assume that the uphill journey is X kilometers, the downhill journey is Y kilometers, and the flat road is Z kilometers.
x+y+z=3.3，(x/3)+(y/5)+(z/4)=5 1/60，(x/5)+(y/3)+(z/4)=53.4/60
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