The centers of Marathon County, Bayfield County, and Dodge County all lie along a straight road. If Marathon County is equidistant from Bayfield County and Dodge County, what is the distance from Bayfield County to Dodge County if the distance from Marathon County to Dodge County is 487 miles?

Marathon County is equidistant from Bayfield County and Dodge County, so its distance to Bayfield is also 487 miles. With the three centers along the road and Marathon between the other two, add the two equal distances: 487 + 487 = 974 miles. The correct choice is 974 miles.

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