Question 419707
v, to remove and replace.
Total finished contents is to be unchanged.


basic setup {{{(0.3*10-0.3v+1.0v)/10=0.5}}}


{{{0.3*10-0.3v+v=0.5*10}}}

{{{v-0.3v=0.5*10-0.3*10}}}

{{{(1-0.3)v=(0.5-0.3)10}}}

{{{v=10((0.5-0.3)/(1-0.3))}}}
When this makes sense, just compute v.