Question 427227
drain and replace some v quarts
volume to be unchanged


{{{(0.6*25-0.6v+0*v)/25=0.4}}}

{{{0.6*25-0.6v=0.4*25}}}

{{{-0.6v=0.4*25-0.6*25}}}

{{{v=(0.6-0.4)25/0.6}}}

{{{v=0.2*25/0.6}}}

{{{v=(1/3)25}}}

{{{highlight(v=8&1/3)}}}