SOLUTION: Laura invested $2000, some at 8%,annual simple interestand the rest at 10% annual simple interest, giving her a total of $176 per year. How much did she invest at 8%?

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Question 130458This question is from textbook algebra ( the classic)
: Laura invested $2000, some at 8%,annual simple interestand the rest at 10% annual simple interest, giving her a total of $176 per year. How much did she invest at 8%? This question is from textbook algebra ( the classic)

Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
.08X+.10(2000-X)=176
.08X+200-.10X=176
-.02X=176-200
-.02X=-24
X=-24/.02
X=1200 AMOUNT INVESTED @ 8%
2000-1200=800 INVESTED @ 10%
PROOF:
.08*1200+.10*800=176
96+80=176
176=176