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Question
If a commission of 10% is given on the marked price of a book, the publisher gains 20%. If the commission is increased to 15% the gain is :
16.67%
13.33%
15.17%
17%
10.5%
ANSWER : 2
Descrption
<p>Let CP = 100</p> <p>And Marked price = x</p> <p>SP = x - 10% of x</p> <p>x - 10% of x = 120</p> <p>x - 10x/100 = 120</p> <p>9x/100 = 120</p> <p>9x = 1200</p> <p>X = 133.33</p> <p>If 15% Commission was given, then</p> <p>SP = 133.33 - 15% of 133.33</p> <p>SP = 133.33 - 20</p> <p>SP = 113.33</p> <p>Gain = 113.33 - 100 = 13.33% (ans)</p>
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