The price of the jewel passing through three hands rises on the whole by65 if the first and the seco...........

Quantitative Aptitude(IBPS RRB PO) Profit and loss

The price of the jewel,passing through three hands,rises on the whole by65%.if the first and the second sellers 20%and25% profit respectively find the percentage profit earned by the third seller.

15%

12%

10%

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Explanation:

Let the orginal price of the jewel be Rs p and let the profit earned by the thrid seller be x%
Then,(100+x)% of 125% OF 120% OF P=165% OF P
((100+X)/100*125/100*120/100*P)=(165/100*P)
(100+X)=(165*100*100)/(125*120)=110=>X=10%