Question 988232
F - number of 50 cent coins
T - number of 10 cent coins
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{{{50F+10T=440}}}
{{{F=2T}}}
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Substituting,
{{{50(2T)+10T=440}}}
{{{100T+10T=440}}}
{{{110T=440}}}
{{{T=4}}}
So then,
{{{F=2(4)}}}
{{{F=8}}}