Answer:
$673.27
Explanation:
Initial amount = $660
1% Increase = $660*(1+1%)
1% Increase = $660+$6.6
1% Increase = $666.6
Further 1% Increase = $666.6*(1+1%)
Further 1% Increase = $666.6 + $6.666
Further 1% Increase = $673.266
Further 1% Increase = $673.27