One fourth of a solution that was 8% sugar by weight was replaced by a second solution resulting in a solution that was 16 percent sugar by weight. The second solution was what percent sugar by weight? Choose the correct choice from the following choices:	A) 74%	B) 52%	C) 40%	D) 18%	E) 8.5%
Say the second solution (which was 1/4 th of total) was x% sugar, then 3/4*0.08+1/4*x=1*0.16 --&gt; x=0.4. Alternately you can consider total solution to be 100 liters and in this case you'll have: 75*0.08+25*x=100*0.16 --&gt; x=0.4.   Answer: 40%.
<result>C</result>
One fourth of a solution that was 8% sugar by weight was replaced by a second solution resulting in a solution that was 16 percent sugar by weight. The second solution was what percent sugar by weight?