gistfile1.rb

#!/usr/bin/ruby

seconds = [
  2 * 60 + 58.65,
  3 * 60 + 19.55,
  3 * 60 + 13.48 ,
  3 * 60 + 3.89,
  3 * 60 + 18.69,
  2 * 60 + 59.03,
  2 * 60 + 58.42,
  3 * 60 + 1.32,
  3 * 60 + 6.54,
  3 * 60 + 33.45,
  3 * 60 + 16.96,
  3 * 60 + 30.36,
  4 * 60 + 41.44
]

sum = seconds.reduce { |acc, n| acc + n } / 60.0
#sum = seconds.reduce {:+} / 60.0 # coming in 1.9

puts "total = #{sum} minutes"