diff --git a/Work/bounce.py b/Work/bounce.py
index 3660ddd82..572f6d759 100644
--- a/Work/bounce.py
+++ b/Work/bounce.py
@@ -1,3 +1,12 @@
 # bounce.py
 #
 # Exercise 1.5
+
+height = 100
+ratio = 3/5
+bounces = 1
+
+while height > 1:
+    height = height * ratio
+    print(bounces, round(height, 4))
+    bounces = bounces + 1
diff --git a/Work/mortgage.py b/Work/mortgage.py
index d527314e3..f711d2709 100644
--- a/Work/mortgage.py
+++ b/Work/mortgage.py
@@ -1,3 +1,41 @@
 # mortgage.py
 #
 # Exercise 1.7
+# mortgage.py
+
+principal = 500000.0
+rate = 0.05
+original_payment = 2684.11
+total_paid = 0.0
+month = 0
+
+extra_payment_start_month = 61
+extra_payment_end_month = 108
+extra_payment = 1000
+
+while principal > 0:
+    # larger payment for starting 12 months
+    # if month < 12:
+    #     payment = original_payment + 1000
+    # else:
+    #     payment = original_payment
+    payment = original_payment
+
+    # start of month payment
+    if month % 12 == 0:
+        payment = payment + extra_payment_start_month
+    # end of month payment
+    if month % 12 == 11:
+        payment = payment + extra_payment_end_month
+
+    # extra payment for 4 years after first 5 years
+    if month >= 12 * 5 and month < 12 * 9:
+        payment = payment + extra_payment
+
+    month = month + 1
+    principal = principal * (1+rate/12) - payment
+    total_paid = total_paid + payment
+
+    print(f'In month {month} total amount paid is ${total_paid}, left principal is ${principal}')
+
+print('Total paid', total_paid, 'over', month)
diff --git a/Work/pcost.py b/Work/pcost.py
index e68aa20b4..145dfa93d 100644
--- a/Work/pcost.py
+++ b/Work/pcost.py
@@ -1,3 +1,26 @@
 # pcost.py
 #
 # Exercise 1.27
+import sys
+
+def portfolio_cost(filename):
+    with open(filename, 'rt') as f:
+        headers = next(f)
+
+        total = 0
+        for line in f:
+            name, shares, price = line.split(',')
+            try:
+                total = total + int(shares.strip()) * float(price.strip())
+            except ValueError as e:
+                print('Encountered unproccessable values!')
+
+    return total
+
+if len(sys.argv) == 2:
+    filename = sys.argv[1]
+else:
+    filename = 'Data/portfolio.csv'
+
+cost = portfolio_cost(filename)
+print('Total cost:', cost)
diff --git a/Work/report.py b/Work/report.py
index 47d5da7b1..fdd404269 100644
--- a/Work/report.py
+++ b/Work/report.py
@@ -1,3 +1,52 @@
 # report.py
 #
 # Exercise 2.4
+
+import csv
+
+def read_portfolio(filename):
+    """Open portfolio and read into structured data
+
+    :filename: name of portfolio file
+    :returns: python list of shares and their information
+
+    """
+    portfolio = []
+
+    with open(filename, 'rt') as f:
+        rows = csv.reader(f)
+        headers = next(rows)
+        for row in rows:
+            holding = {
+                'name':   row[0],
+                'shares': int(row[1]),
+                'price':  float(row[2])
+            }
+
+            portfolio.append(holding)
+
+    return portfolio
+
+def read_prices(filename):
+    """Open prices file and read into structured data
+
+    :filename: name of prices file
+    :returns: python list of prices for a share
+
+    """
+    prices = []
+
+    with open(filename, 'rt') as f:
+        rows = csv.reader(f)
+        for row in rows:
+            try:
+                share = {
+                    'name':   row[0],
+                    'price':  float(row[1])
+                }
+                prices.append(share)
+            except IndexError as e:
+                print("Error indexing incoming data")
+                continue
+
+    return prices
diff --git a/Work/sears.py b/Work/sears.py
new file mode 100644
index 000000000..df968fff7
--- /dev/null
+++ b/Work/sears.py
@@ -0,0 +1,15 @@
+# sears.py
+
+bill_thickness = 0.11 * 0.001    # Meters (0.11 mm)
+sears_height   = 442             # Height (meters)
+num_bills      = 1
+day            = 1
+
+while num_bills * bill_thickness < sears_height:
+    print(day, num_bills, num_bills * bill_thickness)
+    day = day + 1
+    num_bills = num_bills * 2
+
+print('Number of days', day)
+print('Number of bills', num_bills)
+print('Final height', num_bills * bill_thickness)