Question

$8,000 is invested in two different accounts earning 3% and 4% interest.
If the two accounts earn a total of $295 in interest, how much money was invested at 3%?
$2,500
$3,500
$5,500

Answer 1

Let x be the amount invested at 3%, then
\[0.04 (8000-x)+0.03 x=295
\]
Solve for x

Answer 2

Simplifying
\[320.\, -0.01 x=295 \\
.01 x = 320 -295=25\\
x= 2500
\]

Answer 3

@eliassaab , why don't you let Corey work it out on his own?