gistfile1.txt

def average(grades)
  grades.map! {|num| num.to_i}
  grades.inject(0) {|sum, n| sum += n} / grades.size
end

puts 'Enter grades (one per line, type "done" on a new line when finished):'
grades = Array.new
grade = gets.chomp
while grade.downcase != "done"
  grades << grade
  grade = gets.chomp
end

if average(grades) >= 60
  puts "passed"
else
  puts "failed"
end