THE THREE RAILWAY STATIONS.—solution

The three stations form a triangle, with sides 13, 14, and 15 miles. Make the 14 side the base; then the height of the triangle is 12 and the area 84. Multiply the three sides together and divide by four times the area. The result is eight miles and one-eighth, the distance required.

click here to go to my blog.

See more interesting puzzles at http://puzzles.50webs.org