Question 1095944
x, 20 rupee notes
y, 50 rupee notes

{{{x/y=2}}}

{{{x=2y}}}

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{{{20x+50y=2700}}}
{{{2x+5y=270}}}


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{{{simple}}} {{{substitution}}} {{{for}}} {{{x}}}
{{{2(2y)+5y=270}}}
{{{9y=270}}}
{{{highlight(y=30)}}}-------- 30 of the fifty rupee notes