Carla invested $18,000, part at 18% and part at 1%. If the total interest at the end of the year is $350,?

Brittney Inabnit: ask Carla

Len Bormes: Let x = amount invested at 18%, y = amount invested at 1%..18x + .01y = 350x + y = 18000.18x + .01(18000-x) = 350.18x + 180.00 - .01x = 350.17x = 170x = 1000y = 17000...Show more