could someone help me with math?

Question

Suppose you invest money in two accounts. One of the accounts pay 10% annual interest, whereas the other pays
11% annual interest. If you have $5,000 more invested at 11% than you invested at 10%, how much do you have invested in each account if the total amount of interest you earn in a year is $1,390?

 

you are investing $____ at 10% and $____at 11%

Answer 1

Here's how to do a similar problem - suppose you have $1000 more invested at 6% than at 5% and the total interest in a year is $170.  Then

 

.05X + .06(X+1000) = 170 

.11X + 60 = 170

.11X = 110

X = $1000