The lengths of two rivers are in the raito 12:7.The lenght o

The lengths of two rivers are in the raito 12:7.The lenght of the longer one is 42km.Find the length of the shorter one.

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fengcanming 幼苗

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12/7=42/X
X=24.5
Thus the length of the shorter one is 24.5

1年前

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