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If COST PRICE of 6 watches is equal to SELLING PRICE of 4 watches.Find the gain percent. Please send the answer step by step...URGENT



Let CP =x,

Therefore, 6x=4y; y/x=6/4

Profit %={(SP-CP)/ CP} X 100
={(6y-6x)/6x} X 100
=(y-x/x) X 100
=((y/x) -1) X 100
=(6/4 - 4/4) X 100
=(2/4) X 100
=1/2 X100 %
=50 % 
Ans: profit=50%
Write the answer down on a piece of paper so that you can understand it better b'cos it is difficult to read it this way.You can completely trust my answer. It is absolutely correct. 
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