diff --git a/ruby/day_24.rb b/ruby/day_24.rb
new file mode 100644
index 0000000..14501a0
--- /dev/null
+++ b/ruby/day_24.rb
@@ -0,0 +1,43 @@
+require "letters"
+
+packages = DATA.read.split("\n").map(&:to_i)
+total = packages.inject(:+)
+weight = total/3
+
+(1..packages.size).each do |i|
+  puts i
+  groups = packages.combination(i).select {|combo| combo.inject(:+) == weight }
+  unless groups.empty?
+    p groups.map {|g| g.inject(:*) }.sort[0,10]
+    exit
+  end
+end
+__END__
+1
+3
+5
+11
+13
+17
+19
+23
+29
+31
+37
+41
+43
+47
+53
+59
+67
+71
+73
+79
+83
+89
+97
+101
+103
+107
+109
+113