An Accountant Has Money in Three Accounts That Pay 5

An accountant has money in three accounts that pay 5%, 8%, and 12% in annual interest. He has twice as much invested at 5% as he does at 8% and three times as much invested at 12% as he does at 8%. If the total interest from the three accounts if $216 for the year, how much is invested at each rate? ( Hint : Let x = the amount invested at 8%.)

A) $740 invested at 5% $370 invested at 8%
$1,110 invested at 12%
B) $860 invested at 5% $430 invested at 8%
$1,290 invested at 12%
C) $730 invested at 5% $365 invested at 5%
$695 invested at 12%
D) $820 invested at 5% $410 invested at 8%
$1,230 invested at 12%
E) $800 invested at 5% $400 invested at 8%
$1,200 invested at 12%