Question

suppose an investment of $6600 doubles every 8 years. How much is the investment worth after 40 years?

Answer 1

$6600 X 2 8 years
$13200 X 2 16 years
$26400 X 2 24 years
$52800 X 2 32 year
$105600 X 2 40 year
=
$211,200