$5,000 is invested in two different accounts yielding 3% and 3.5% interest. The interest earned on the two accounts is $155.

How much money was invested at 3% interest?

$1,000
$3,000
$4,000

Question

$5,000 is invested in two different accounts yielding 3% and 3.5% interest. The interest earned on the two accounts is $155. 

How much money was invested at 3% interest? 


$1,000
$3,000
$4,000

perl · Answer

you can solve this as a system of equations

thedj4jc · Answer

What do you mean?

perl · Answer

Let x = amount invested in 3% interest account
Let y = amount invested in 3.5% interest account

x + y = 5000
.03x + .035y = 155

thedj4jc · Answer

Okay, that's a system of equations. So, how do I find x?

thedj4jc · Answer

@perl

perl · Answer

you can solve the system by substitution or elimination. or you can use a calculator (if your teacher allows it) http://www.wolframalpha.com/input/?i=x+%2B+y+%3D+5000%2C+.03x+%2B+.035y+%3D+155