Question 877530
{{{0}}},{{{4700}}}
{{{1}}},{{{4700(0.7)=3290}}}
{{{2}}},{{{3290(0.7)=2303}}}
{{{3}}},{{{2303(0.7)=1612}}}
{{{4}}},{{{1612(0.7)=1128}}}
{{{5}}},{{{1128(0.7)=790}}}
{{{6}}},{{{790(0.7)=553}}}
{{{7}}},{{{553(0.7)=387}}}
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After 7 years.