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July 1st, 2018, 08:18 PM   #1
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why 9CP is written?

The profit that a person makes on selling 9 apples is equal to the cost of 2 apples. What is the percentage of profit?

Solution: 9*SP - 9*CP = 2*CP

9*SP = 11*CP

SP/CP = 11/9

Profit% = 2/9 = 22.22%

Question didn't mentioned about 9CP. so why 9CP is written?
Ganesh Ujwal is offline  
 
July 1st, 2018, 09:45 PM   #2
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The question mentioned "profit", which (per apple) is SP - CP.

The profit on selling 9 apples is therefore 9(SP - CP) = 9SP - 9CP.
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