Question 324537
1.{{{A+B=100}}}
2.{{{2.5A+5B=4(100)=400}}}
Multiply eq. 1 by -2.5 and add to eq. 2,
{{{-2.5A-2.5B+2.5A+5B=-250+400}}}
{{{2.5B=150}}}
{{{highlight(B=60)}}}
Then from eq. 1,
{{{A+60=100}}}
{{{highlight(A=40)}}}
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40 kg of Candy A and 60 kg of Candy B.