If a commission of 10% is given on MP of book ,the publisher gains 20% if the commission is increase to 15% the gain % is ?
A. 10
B. 20
C. 15
D. 40/3
Solution(By Examveda Team)
Let MP = 100.
SP after giving 10% commission = 100 - 10% of 100 = 90.
Let CP = X.
Gain = 20%.
Now,
X + 20% of X = 90
120X /100 = 90
X = 75.
CP = 75.
If 15% commission was given then Sp = 85.
Gain = 85 -75 = 10
% gain = (10 *100)/75 = 40/3 = 13.33%.
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120 * 100 *85
G% = (--------------------- ) - 100 = 13.33%
100 * 90 * 100
Explanation any one?
20
D) use formula a+b+ab/100= 20
a= mark up b= 10% i,e comission
40/3