A worker invested $25,000 into accounts, one yielding 6% interest and the other yielding 12%. If you received a total of $1860 in interest at the end of the year how much did he invest at 6%

Answer 1

S + T = 25000

.06S + .12T = 1860

Multi[ly 2nd equation by 100/6

S + 2T =31000

Subtract: T = 6000

You finish it from here.