Answers

2016-04-07T16:52:41+05:30
CP=25
because 20% MORE will be gained
so 83-78 gives 5. 
therefore 5=20% of CP
so, 5= 20/100 x CP
so, 5= 1/5 x CP
therefore CP= 5x5=25
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NO 25 IS THE ADDITIONAL PROFIT WHEREAS CP IS 53 BY THE WAY THANKS FOR ANSWERING