diff --git a/rideshare.rb b/rideshare.rb
new file mode 100644
index 0000000..4a51116
--- /dev/null
+++ b/rideshare.rb
@@ -0,0 +1,138 @@
+# a method to add a driver to the driver hash
+def add_driver_to_hash(ride_hash, drivers_hash)
+  drivers_hash[ride_hash[:driver_id]] = {
+    num_rides_given: 1,
+    total_amt_made: ride_hash[:cost],
+    total_of_ratings: ride_hash[:rating]
+  }
+end
+
+# a method to update an existing driver's hash
+def modify_driver_hash(ride_hash, drivers_hash)
+  drivers_hash[ride_hash[:driver_id]][:num_rides_given] += 1
+  drivers_hash[ride_hash[:driver_id]][:total_amt_made] += ride_hash[:cost]
+  drivers_hash[ride_hash[:driver_id]][:total_of_ratings] += ride_hash[:rating]
+end
+
+# ride information copied from the rides.csv file, organized as an array of hashes, where each hash represents one ride
+rides = [
+  {
+    driver_id: "DR0004",
+    date: "3rd Feb 2016",
+    cost: 5,
+    rider_id: "RD0022",
+    rating: 5
+  },
+  {
+    driver_id: "DR0001",
+    date: "3rd Feb 2016",
+    cost: 10,
+    rider_id: "RD0003",
+    rating: 3
+  },
+  {
+    driver_id: "DR0002",
+    date: "3rd Feb 2016",
+    cost: 25,
+    rider_id: "RD0073",
+    rating: 5
+  },
+  {
+    driver_id: "DR0001",
+    date: "3rd Feb 2016",
+    cost: 30,
+    rider_id: "RD0015",
+    rating: 4
+  },
+  {
+    driver_id: "DR0003",
+    date: "4th Feb 2016",
+    cost: 5,
+    rider_id: "RD0066",
+    rating: 5
+  },
+  {
+    driver_id: "DR0004",
+    date: "4th Feb 2016",
+    cost: 10,
+    rider_id: "RD0022",
+    rating: 4
+  },
+  {
+    driver_id: "DR0002",
+    date: "4th Feb 2016",
+    cost: 15,
+    rider_id: "RD0013",
+    rating: 1
+  },
+  {
+    driver_id: "DR0003",
+    date: "5th Feb 2016",
+    cost: 50,
+    rider_id: "RD0003",
+    rating: 2
+  },
+  {
+    driver_id: "DR0002",
+    date: "5th Feb 2016",
+    cost: 35,
+    rider_id: "RD0066",
+    rating: 3
+  },
+  {
+    driver_id: "DR0004",
+    date: "5th Feb 2016",
+    cost: 20,
+    rider_id: "RD0073",
+    rating: 5
+  }, 
+  {
+    driver_id: "DR0001",
+    date: "5th Feb 2016",
+    cost: 45,
+    rider_id: "RD0003",
+    rating: 2
+  }
+]
+
+# initiliaze the new drivers hash where information per driver will be stored
+drivers = {}
+
+# loop through the rides array of hashes
+rides.each do |ride|
+  if !drivers.keys.include? ride[:driver_id] # if the driver's id does not already exist in the drivers' hash, call the add_driver_to_hash method to add it
+    add_driver_to_hash(ride, drivers)
+  else # if the driver's id already exists in the drivers' hash, call the modify_driver_hash method to add it
+    modify_driver_hash(ride, drivers)
+  end
+end
+
+highest_amt_money_made = 0 # create the variable to store the highest amount of money made and set it to 0
+driver_with_highest_amt_money = "" # create the variable to store the driver id for the driver who earned the most amount of money
+highest_average_rating = 0 # create the variable to store the highest average rating and set it to 0
+driver_with_highest_rating = "" # create the variable to store the driver id for the driver who had the highest average rating
+
+# loop through the drivers hash
+drivers.each do |driver_id, driver_info|
+  avg_rating = driver_info[:total_of_ratings].to_f / driver_info[:num_rides_given] # calculate the drivers average rating 
+  driver_info[:avg_rating] = avg_rating # add the driver's average rating to their hash
+  # print driver's information
+  puts "Driver #{driver_id} Information:
+  Number of rides given: #{driver_info[:num_rides_given]}
+  Total amount of money made: $#{driver_info[:total_amt_made]}
+  Average rating: #{driver_info[:avg_rating].round(2)}
+  ......................."
+  # set the highest_amt_money_made variable to the driver's total amt made if it's higher than the current highest_amt_money_made
+  if driver_info[:total_amt_made] > highest_amt_money_made 
+    highest_amt_money_made = driver_info[:total_amt_made] 
+    driver_with_highest_amt_money = driver_id # also set the driver_with_highest_amt_money variable to the driver's id
+  end
+  # set the highest_average_rating variable to the driver's average rating if it's higher than the current highest_average_rating
+  if driver_info[:avg_rating] > highest_average_rating
+    highest_average_rating = driver_info[:avg_rating]
+    driver_with_highest_rating = driver_id # also set the driver_with_highest_rating variable to the driver's id
+  end
+end
+
+puts "The driver with the highest amount of money made was #{driver_with_highest_amt_money} who made $#{highest_amt_money_made}." # output driver w/ highest amt money made
+puts "The driver with the highest rating was #{driver_with_highest_rating} with a rating of #{highest_average_rating.round(2)}." # output driver w/ highest avg rating