SOLUTION: A total of $22,000 is invested in 3 accounts earning 3%, 5%, and 7% annual interest. The combined interest for one year is $1146. If the amount invested at 7% is four times the
Algebra.Com
Question 881920: A total of $22,000 is invested in 3 accounts earning 3%, 5%, and 7% annual interest. The combined interest for one year is $1146. If the amount invested at 7% is four times the amount at 5%, find the amount invested at 3%.
Enter the amount rounded to the nearest dollar, without commas or the dollar symbol.
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
A total of $22,000 is invested in 3 accounts earning 3%, 5%, and 7% annual interest. The combined interest for one year is $1146. If the amount invested at 7% is four times the amount at 5%, find the amount invested at 3%.
Enter the amount rounded to the nearest dollar, without commas or the dollar symbol.
***
let x=amt invested at 5%
4x=amt invested at 7%
22000-(4x+x)=22000-5x=amt invested at 3%
...
5%x+7%*4x+3%(22000-5x)=1146
.05x+.28x+660-.15x=1146
.18x=486
x=2700
22000-5x=8500
amount invested at 3%.=8500
RELATED QUESTIONS
A total of $22,000 is invested in 3 accounts earning 3%, 5%, and 7% annual interest. The (answered by lwsshak3)
A total of $12,000 is invested in 3 accounts earning 5%, 6%, and 7% annual interest. The (answered by lwsshak3)
A total of $18,000 is invested in 3 accounts earning 4%, 5%, and 6% annual interest. The (answered by lwsshak3)
A total of $4100 is invested into two accounts paying 3% and 5% annual interest.... (answered by checkley79)
A $7,000 principal is invested in two accounts, one earning 3% interest and another... (answered by josgarithmetic,ikleyn)
A sum of $2100 is invested in two accounts, one earning 7% simple annual interest and one (answered by math problem solving)
A total of $16,000 is invested in 3 accounts earning 4%, 6%, and 8% annual interest. The (answered by mananth)
A total of $20,000 is invested in two accounts earning simple interest. For one account,... (answered by checkley77)
A total of $3800 is invested into two accounts paying 4% and 7% annual interest. In one... (answered by mananth)