SOLUTION: Ellen invested $9000, part at three percent per year and the rest at 5percent per year. After one year the total interest from these investments was $354. How much did she invest a

Question 412645: Ellen invested $9000, part at three percent per year and the rest at 5percent per year. After one year the total interest from these investments was $354. How much did she invest at each rate?
I have been looking at this for over an hour andnim not sure even how to start it.. Thank you so much!!
Answer by rfer(16322) (Show Source): You can put this solution on YOUR website!
0.03x+0.05(9000-x)=354
0.03x+450-0.05x=354
-0.02x=-96
x=4800 at 3%
9000-x=4200 at 5%
RELATED QUESTIONS
Phyllis invested 43000dollars, a portion earning a simple interest rate of 5 percent per (answered by ikleyn,greenestamps)

A total of $2000 was invested: part at 8% and the rest at 12% per year. If after one... (answered by macston)

Deshi invested $32,000. He invested part of it at 8% interest per year and the rest at... (answered by mananth)

Bob invested $24000. He invested part of it at 8% interest per year and the rest at 10%... (answered by richwmiller,greenestamps)

Phyllis invested 64000 dollars, a portion earning a simple interest rate of 5 percent per (answered by mananth)

A person invested $9000, part at 4 1/2%p.a and the rest at 5% p.a. If the total interest (answered by macston)

priyankaa invested $2000, part at 8% per annum and the rest at 10% per annum. After one... (answered by stanbon)

Vien invested $880, part at 9% per annum and the rest at 12% per annum. After one year... (answered by ikleyn)

Jennifer invested $500 part at 7% per annum and the rest at 10% per annum. after one year (answered by ewatrrr)