diff --git a/recipe_batches/recipe_batches.py b/recipe_batches/recipe_batches.py
index c845950c5..2e33bc5b4 100644
--- a/recipe_batches/recipe_batches.py
+++ b/recipe_batches/recipe_batches.py
@@ -3,12 +3,21 @@
 import math
 
 def recipe_batches(recipe, ingredients):
-  pass 
+    cake_batches = 0
+    for key, value in recipe.items():
+        if key not in ingredients or ingredients[key] < value:
+            cake_batches = 0
+            break
+        something = ingredients[key] // value
+        if cake_batches > 0 and something > cake_batches:
+            continue
+        cake_batches = something
+    return cake_batches
 
 
 if __name__ == '__main__':
-  # Change the entries of these dictionaries to test 
+  # Change the entries of these dictionaries to test
   # your implementation with different inputs
   recipe = { 'milk': 100, 'butter': 50, 'flour': 5 }
   ingredients = { 'milk': 132, 'butter': 48, 'flour': 51 }
-  print("{batches} batches can be made from the available ingredients: {ingredients}.".format(batches=recipe_batches(recipe, ingredients), ingredients=ingredients))
\ No newline at end of file
+  print("{batches} batches can be made from the available ingredients: {ingredients}.".format(batches=recipe_batches(recipe, ingredients), ingredients=ingredients))
diff --git a/stock_prices/stock_prices.py b/stock_prices/stock_prices.py
index 9de20bc94..5577d2be3 100644
--- a/stock_prices/stock_prices.py
+++ b/stock_prices/stock_prices.py
@@ -3,8 +3,15 @@
 import argparse
 
 def find_max_profit(prices):
-  pass
+    maximum = max(prices)
+    max_index = prices.index(maximum)
+    if max_index == 0:
+        maximum = max(prices[1:])
+        max_index = prices.index(maximum)
 
+    minimum = min(prices[:max_index])
+
+    return maximum - minimum
 
 if __name__ == '__main__':
   # This is just some code to accept inputs from the command line
@@ -12,4 +19,4 @@ def find_max_profit(prices):
   parser.add_argument('integers', metavar='N', type=int, nargs='+', help='an integer price')
   args = parser.parse_args()
 
-  print("A profit of ${profit} can be made from the stock prices {prices}.".format(profit=find_max_profit(args.integers), prices=args.integers))
\ No newline at end of file
+  print("A profit of ${profit} can be made from the stock prices {prices}.".format(profit=find_max_profit(args.integers), prices=args.integers))