diff --git a/rideshare.rb b/rideshare.rb
new file mode 100644
index 0000000..1de6f5d
--- /dev/null
+++ b/rideshare.rb
@@ -0,0 +1,151 @@
+# RIDESHARE
+# Calculates statistics of rideshare data.
+
+drivers = {
+  DR0001: [
+    {
+      "3rd Feb 2016": [
+        {
+          cost: 10,
+          rider_id: "RD0003",
+          rating: 3,
+        },
+        {
+          cost: 30,
+          rider_id: "RD0015",
+          rating: 4,
+        },
+      ],
+    },
+    {
+      "5th Feb 2016": [
+        {
+          cost: 45,
+          rider_id: "RD0003",
+          rating: 2,
+        },
+      ],
+    },
+  ],
+  DR0002: [
+    {
+      "3rd Feb 2016": [
+        {
+          cost: 25,
+          rider_id: "RD0073",
+          rating: 5,
+        },
+      ],
+    },
+    {
+      "4th Feb 2016": [
+        {
+          cost: 15,
+          rider_id: "RD0013",
+          rating: 1,
+        },
+      ],
+    },
+    {
+      "5th Feb 2016": [
+        {
+          cost: 35,
+          rider_id: "RD0066",
+          rating: 3,
+        },
+      ],
+    },
+  ],
+  DR0003: [
+    {
+      "4th Feb 2016": [
+        {
+          cost: 5,
+          rider_id: "RD0066",
+          rating: 5,
+        },
+      ],
+    },
+    {
+      "5th Feb 2016": [
+        {
+          cost: 50,
+          rider_id: "RD0003",
+          rating: 2,
+        },
+      ],
+    },
+  ],
+  DR0004: [
+    {
+      "3rd Feb 2016": [
+        {
+          cost: 5,
+          rider_id: "RD0022",
+          rating: 5
+        },
+      ],
+    },
+    {
+      "4th Feb 2016": [
+        {
+          cost: 10,
+          rider_id: "RD0022",
+          rating: 4
+        },
+      ],
+    },
+    {
+      "5th Feb 2016": [
+        {
+          cost: 20,
+          rider_id: "RD0073",
+          rating: 5,
+        },
+      ],
+    },
+  ],
+}
+
+highest_earner = {
+  driver: "",
+  amount_earned: 0,
+}
+
+highest_rated = {
+  driver: "",
+  rating: 0,
+}
+
+puts "STATS PER DRIVER\n**********\n\n"
+drivers.each do | driver, workdays |
+  puts "#{driver} stats:"
+
+  # The number of rides each driver has given
+  ride_count = workdays.sum { |dates, rides| dates.sum { | date, rides | rides.count } }
+  puts "Number of rides given: #{ride_count}"
+
+  # The total amount of money each driver has made
+  money_earned = workdays.sum { |dates, rides| dates.sum { | date, rides | rides.sum { |ride| ride[:cost] } } }
+  puts "Total earned: $#{money_earned}"
+  if money_earned > highest_earner[:amount_earned]
+    highest_earner[:driver] = driver
+    highest_earner[:amount_earned] = money_earned
+  end
+
+  # Average rating 
+  total_ratings = workdays.sum { |dates, rides| dates.sum { | date, rides | rides.sum { |ride| ride[:rating] } } }
+  average_rating = (total_ratings.to_f/ride_count.to_f).round(2)
+  puts "Average rating: #{average_rating}"
+  if average_rating > highest_rated[:rating]
+    highest_rated[:driver] = driver
+    highest_rated[:rating] = average_rating
+  end
+  puts "\n"
+end
+
+# Which driver made the most money?
+puts "\nHighest earner: #{highest_earner[:driver]}"
+
+# Which driver has the highest average rating?
+puts "Highest rated: #{highest_rated[:driver]}"