SOLUTION: Lane invested $22,000, part at 8% and part at 7%. If the total interest at the end of the year is $1,710, how much did she invest at 8%? I appreciate the help

Question 56176: Lane invested $22,000, part at 8% and part at 7%. If the total interest at the end of the year is $1,710, how much did she invest at 8%? I appreciate the help
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Lane invested $22,000, part at 8% and part at 7%. If the total interest at the end of the year is $1,710, how much did she invest at 8%? I appreciate the help
------------
Let amount invested at 8% be "x":
Interest on this money is 0.08x dollars
-----------
Amount invested at 7% is "22,000-x":
Interest on this mone is 0.07(22,000-x)=(1540-0.07x) dollars
EQUATION:
interest + interest = 1710 dollars
0.08x+1540-0.07x=1710
0.01x=170
x=$17,000 (amount invested at 8%)
22000-x=$5000 (amount invested at 7%)
Cheers,
Stan H.
RELATED QUESTIONS
If Lane invested $22,000, part at 8% and part at 7%. If the total interest at the end of (answered by checkley71)

Lane invested $22,000, part at 8% and the other part at 7%. If the total interest at the... (answered by tutorcecilia)

Lane invested $22,000, part at 8% and part at 7%. If the total interest at the end of... (answered by Nate)

Lane invested $22,000, part at 8% and part at 7%. If the total interest at the end of... (answered by checkley75)

Lane invested $22,000, part at 8% and part at 7%. If the total interest at the end of... (answered by coyote)

Lane invested $22,000 part at 8% and part at 7%. If the actual interest at the end of the (answered by ptaylor)

Lane invested $16,000, part at 6% and part at 8%. If the total interest at the end of the (answered by benni1013)

Lane invested $10,000, part at 15% and part at 14%. If the total interest at the end... (answered by tutorcecilia)

Lane invested $10,000 part at 15% and part at 14% If the total interest at the end of the (answered by ankor@dixie-net.com)