Amanda has had 3 pay cuts in her salary in the past 6 months. If the first pay cut was 12%, the second pay cut was 10% and the third was 10%. What will be the percentage decrease, if the salary is decreased in a single shot?
Choose the most appropriate option.
A) 11.72%	B) 38.72%	C) 20.72%	D) 18.72%	E) 28.72%
Let Rs.100 be initial salary.   Salary After 1st decrease, 12% = 88   Salary After 2nd decrease, 10% = 79.2 i.e. reduced by 10 percent of 88   Salary After 3rd decrease, 10% = 71.28 i.e. reduced by 10 percent of 79.2   So if its decreased in single shot =   i = ( ( b - a ) /b ) * 100   =28.72%   ANSW28.72%R:28.72%
<result>E</result>
Amanda has had 3 pay cuts in her salary in the past 6 months. If the first pay cut was 12%, the second pay cut was 10% and the third was 10%. What will be the percentage decrease, if the salary is decreased in a single shot?