Where N is the value of J, and J is the value of X, a train leaves London for Edinburgh travelling at 120 miles per hour. 20 minutes later, a second train leaves Edinburgh for London, travelling at 140 miles per hour. Assuming the two are on the same piece of rail, and that the route is the direct 332 miles (rather than the literal 398 miles), find the sum of X divided by N.
- Muff Nob 8
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