Sender
Recipient
Currency
Log
Date
+
800 
+
50
+
50
-
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
+
300
+
50
-
400 Activity Cost (Cost to Bob for Apples)
+
200
+
50
+
300
-
400 Activity Cost (Cost to Bob for Apples)
+
50
+
50
+
50
+
100
+
50
+
100
+
100
-
400 Activity Cost (Cost to Bob for Apples)
-
400 Activity Cost (Cost to Bob for Apples)
+
500
+
50
+
50
-
400 Activity Cost (Cost to Bob for Apples)
+
50
-
400 Activity Cost (Cost to Bob for Apples)