Question 54315
6% account has x dollars
8% account has 18000-x dollars
Interest = Principle * Rate * Time
Interest from 6% account = x(0.06)(1) = 0.06x
Interest from 8% account = (18000 - x)(0.08)(1) = 0.08(18000 - x)
Total interest:
0.06x + 0.08(18000 - x) = 1290
0.06x + 1440 - 0.08x = 1290
       -1440           -1440
                -0.02x = -150
                     x = 7500
6% account has 7500 which earns 450 interest
8% account has 18000-7500 or 10500 dollars which earns 840 interest
checks out to give a total of 1290 interest