Math
posted by Drew .
Althea invested $10,000 for one year, part at 7% and part at 6 1/4%. If she earned a total interest of
$656.50, how much was invested at each rate?

x = amount at 7%
y = amount at 6.25%
x + y = 10,000 or x = 10,000  y
.07x + .0625y = 656.50
You can solve by substitution:
.07(10,000  y) +.0625y = 656.50
Respond to this Question
Similar Questions

algebra
Janet invested $23,000, part at 6% and part at 17%. If the total interest at the end of the year is $2,260, how much did she invest at 6%? 
Algebra
Joe invested $12000, part at 6% interest and part at 8% interest. In the first year he earned $860 in interest. How much was invested at each rate? 
Math
An investment advisor invested a total of $12,000, part at 2.5% annual simple interest and part at 4% annual simple interest. The amount of interest earned for 1 year was $426. How much was invested at the 2.5% rate and how much was … 
Math
Joe invested $12,000, part at 6% interest and part at 8% interest. In the first year he earned $860 in interest. How much was invested at each rate? 
algebra
two investments were made totaling $15,000. for a certain year these investments yielded $1432 in simple interest. part of the $15,000 was invested at 9% and part at 10%. find the amount invested at each rate. a total of $1150 was … 
Math
A total of $11,000 was invested. Part of the $11,000 was invested at 4% and the rest invested at 7%. If the investments earn $680 per year, how much was invested at each rate? 
math
you invested $4000 in two accounts paying 2% and 9% annual interest, respectively if the total interest earned for the year was $150, how much was invested at each rate. $_was invested at 2% and _$ was invested at 9% 
Algebra
The Smiths invested $14,000, part at 3% simple interest and the rest at 4% simple interest for a period of one year. if the total interest earned was $460, how much was invested at each rate? 
math
Katie invested a total of $6000 , part at 3 % simple interest and part at 4 % simple interest. At the end of 1 year, the investments had earned $214 interest. How much was invested at each rate? 
Algebra
Katie invested a total of $7,000, part at 2% simple interest, and part at 3% simple interest. At the end of 1 year, the investments earned, $184.00 interest. How much was invested at each rate?