Question

Suppose a rail tunnel is 18.2 mi longer than the longest road tunnel. Express the length of the longest rail tunnel in terms of the length of the longest road tunnel. (Let L represent the length of the longest road tunnel.)

Answer 1

The length of the longest rail tunnel in terms of the length of the longest road tunnel is; (18.2 + L) miles

How to express length of a rail?

We are told that a rail tunnel is 18.2 miles longer than the longest road tunnel.

Now, we are told that L should represent the length of the longest road tunnel.

Now, since L represents the longest road tunnel and the rail tunnel is 18.2 miles longer than the longest road tunnel, then we can say that;

Length of rail tunnel = 18.2 + L

Thus, we conclude that length of the longest rail tunnel in terms of the length of the longest road tunnel is; (18.2 + L) miles

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