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The longest rail tunnel, from Hanshu to Hokkaido, Japan, is 18.2 mi longer than the longest road tunnel, from Laerdal to Aurland, Norway. Express the length of the longest rail tunnel in terms of the length L of the longest road tunnel.

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User Deowk
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1 Answer

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(length of longest rail tunnel) = L +18.2

_____
in miles.
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User Anton Bielousov
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