Question 377544
1.{{{A+B=100}}}
.
.
.
{{{30A+60B=45(100)}}}
2.{{{A+2B=150}}}
Subtract eq. 1 from eq. 2,
{{{A+2B-A-B=150-100}}}
{{{highlight(B=50)}}}liters
Then from eq. 1,
{{{A+50=100}}}
{{{highlight(A=50)}}}liters