how much is in each acccount

Question

Last year, Deon had $20,000 to invest. He invested some of it in an account that paid 6% simple interest per year, and he invested the rest in an account that paid 8% simple interest. After one year, he received a total of $1360 in interest. How much was in each account

Answer 1

Let the principal in account one be x, and the principal in account 2 be y, then x+y=20,000 .06x+.08y=1,360 Solve the system and we get x=$12,000, and y=$8,000