One fourth of a solution that was 10 percent gram flour by weight was replaced by a second solution resulting in a solution that was 16 percent gram flour by weight. The second solution was what percent gram flour by weight ? Select:
A) 34% B) 24% C) 22% D) 18% E) 8.5%
EQ can be written as ...   let sol be s... so (3/4)s*(.1)+(1/4)s*t=s*(.16).... we get t(% of gram flour in 2nd sol)=34%=34%
<result>A</result>
One fourth of a solution that was 10 percent gram flour by weight was replaced by a second solution resulting in a solution that was 16 percent gram flour by weight. The second solution was what percent gram flour by weight ?