Gain or loss

A man purchases a certain number of apples at 3/eur and same number of apples at 4/euros. He mixed them together and sells them at 3/euros. What is the gain or loss percent?
Write answer as number, loss as negative, gain as positive percent.

Correct answer:

p =  -14.29 %

Step-by-step explanation:

p = 100    3n+4n(3n+3n)  (3n+4n) p = 100    3+4(3+3)  (3+4) p = 100    3+467 p=100 71=7100 (1)=7100=14.29%



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