Hello shiv_dutt36

 

Your presumptions are wrong. You are trying to equalize wrong things.

 

 

Now Check :

 

(i)   Monrey with Manager ------------------------- Rs   25

(ii)  Money with waiter-----------------------------   Rs   02

(iii) Money withe all three friend --------------    Rs   03

------------------------------------------------------------------------

 Total                                                        Rs  30

 

Or

 

If you want to say that Rs 27 has been spent than you should calculate the things as

 

Again you can see :     Money spend by three friends = 9 + 9 + 9 = 27

 

                                  Money Money in the pocket of waiter is    = 02

                                  Money to the manager                            = 25

----------------------------------------------------------------------------------------------------------

                                  Total                                                      = 27

 

On the one hand you are saying  that money spent by friends are 27 and on another hand want to equalize it with 30/-

 

Actaully it is only the magic of words not of Mathematics.