Answers

2014-05-28T19:42:30+08:00
First, add the amount of the watch and the ring:
    1  7 8 8 . 7 5
+  2  7 2 8 . 8 5
=  4  5 1 7 . 6 0

Now, subtract that from 5000
     5  0 0 0 . 0 0
-    4  5 1 7 . 6 0 
=       4 8 2 . 4 0

Thus the change is P482.40

Hope this helps :)
p.s. If there is a part of my solution that you did not understand, please do not hesitate to contact me and I'll be more than glad to explain it to you thoroughly
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