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 30%. By approximately what percent would the output now have to be decreased in order to restore the original output?  Choose the correct choice from the following answers:  A) 20%  B) 24%  C) 30%  D) 32%  E) 79%
The original output increases by 10% and then 30%.   Total % change = a + b + ab/100   Total % change = 10 + 30 + 10*30/100= 
<gadget id="calculator">10 + 30 + 10*30/100</gadget>
<output>43</output>
43%   Now, you want to change it to 0, so,   0= 43 + x + 43x/100   x = -43(100)/143 = 30% approximately   Answer is 30%
<result>C</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 30%. By approximately what percent would the output now have to be decreased in order to restore the original output?