Question 1180854
Have 15 mL of 10% and want 95%


Add v mL of the 100% alcohol, approximate

{{{15*0.1+v*1.00=(v+15)*0.95}}}

{{{1.5+v=0.95v+0.95*15}}}

{{{0.05v=0.95*15-1.5}}}

{{{v=(0.95*15-1.5)/0.05}}}

{{{highlight(v=255)}}}