Question 154328
let a="liters of Solution A" and b="liters of Solution B" __ a+b=100 __ b=100-a


(80%)a+(50%)b=(68%)100 __ .8a+.5b=68 __ substituting __ .8a+.5(100-a)=68 __ distributing __ .8a+50-.5a=68


subtracting 50 __ .3a=18 __ dividing by .3 __ a=60


substituting b=100-(60) __ b=40