kiara invested $3500 into two accounts. one account paid 5% interest and the other paid 7.5% interest. she 6% interest on the total investment. how much money did she put in each account?

Answer 1

let x be the amount she invested at 7.5%

then 3500-x is the amount she invested at 5%

set up the equation

.075x + .05(3500 - x) = .06(3500)

.075x + 175 - .05x = 210

.025x = 35

x = 1400

3500 - x = 2100