Question 1072953
F-number of 5 rupee notes
T-number of 10 rupee notes
W-number of 2 rupee notes
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1.{{{5F+10T+2W=220}}}
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2.{{{T=F+6}}}
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3.{{{W=5}}}
Substituting 3 into 1,
{{{5F+10T+2(5)=220}}}
{{{5F+10T=210}}}
{{{F+2T=42}}}
Now substituting eq. 2 into this one,
{{{F+2(F+6)=42}}}
{{{F+2F+12=42}}}
{{{3F=30}}}
Now solve for F, then use the other equations to solve for T and W.