Gallery Problems Exercise

Train Track

Work Time

Train Track

Read this quote about the Union Pacific Railroad from 1867.

“Thirty seconds to a rail for each gang, so four rails go down a minute. There are ten spikes to a rail, 400 rails to a mile.”

A gang is a work crew who lays down the track for the train. The track consists of rails and spikes that hold the rails in place.

  1. List the different rates described in the quote.
  2. How many gangs are at work in the scene described in the quotation? Show your work.
  3. How long does it take 2 gangs to lay down 1 mile of railroad track? Show your work.
  4. How many spikes are needed to lay down 1 mile of railroad track? Show your work.