The price of a vehicle, passing through three hands, rises on the whole by 65%. If the first and the second sellers earned 20% and 25% profit respectively. Find the percentage profit earned by the third seller. Select the correct option.
A) 20%
B) 5%
C) 15%
D) 10%
E) None of these
Explanation :   Solution: Let the original price of the vehicle be Rs. X and let the profit earned by the third seller be Y%.   Then, (100+Y)% of 125% of 120% of X = 165% of X.   [(100+Y)/100 * 125/100 * 120/100 * X] =165/100 * X.   100+Y = 165*100*100/(125*120)= 
<gadget id="calculator">165*100*100/(125*120)</gadget>
<output>110</output>
110=&gt; Y= 10%   Answer : 10%
<result>D</result>
The price of a vehicle, passing through three hands, rises on the whole by 65%. If the first and the second sellers earned 20% and 25% profit respectively. Find the percentage profit earned by the third seller.