Question 317178
1.{{{b/(g+r+b)=2/5}}}
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2.{{{b/(g+r+b+w)=1/4}}}
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From eq. 1,
{{{2g+2r+2b=5b}}}
{{{2g+2r=3b}}}
{{{highlight_green(2(g+r))=3b}}}
From eq. 2,
{{{g+r+b+w=4b}}}
{{{g+r+w=3b}}}
{{{highlight_green(2(g+r))+2w=6b}}}
Substitute from above,
{{{3b+2w=6b}}}
{{{2w=3b}}}
{{{highlight(w/b=3/2)}}}