The output of a factory was increased by 10% to keep up with rising demand. To handle the holiday rush, this new output was increased by 25%. By approximately what percent would the output now have to be decreased in order to restore the original output?
Select.
A) 20%  B) 24%  C) 30%  D) 27%  E) 79%
The original output increases by 10% and then 25%.   Total % change = a + b + ab/100   Total % change = 10 + 25 + 10*25/100= 
<gadget id="calculator">10 + 25 + 10*25/100</gadget>
<output>75/2 = around 37.5</output>
37.5%   Now, you want to change it to 0, so,   0= 37.5 + x + 37.5x/100   x = -37.5(100)/137.5 = 27% approximately   Answer is 27%
<result>D</result>
The output of a factory was increased by 10% to keep up with rising demand. To handle the holiday rush, this new output was increased by 25%. By approximately what percent would the output now have to be decreased in order to restore the original output?