Sender
Recipient
Currency
Log
Date
-
400 
Activity Cost (Cost to Bob for Apples)
-
400 Activity Cost (Cost to Bob for Apples)
+
800
-
400 Activity Cost (Cost to Bob for Apples)
+
350
-
400 Activity Cost (Cost to Bob for Apples)
+
50
+
50
+
100
-
400 Activity Cost (Cost to Bob for Apples)
+
200
+
600
-
400 Activity Cost (Cost to Bob for Apples)
-
400 Activity Cost (Cost to Bob for Apples)
+
800
-
400 Activity Cost (Cost to Bob for Apples)
+
50
+
350
-
400 Activity Cost (Cost to Bob for Apples)
-
400 Activity Cost (Cost to Bob for Apples)
+
600
+
60
-
400 Activity Cost (Cost to Bob for Apples)
+
50
+
100
+
50
+
150
+
60
+
60
+
60