SOLUTION:

Question 678245:
Found 2 solutions by pmatei, MathTherapy:
Answer by pmatei(79) (Show Source): You can put this solution on YOUR website!
If x is the amount she invested at 5%, than 5x (5 times x) is the amount she invested at 8%.
is what she earns from the 5% investment, and is what she earns from the 8% investment. Thus you can write:

Thus the woman invested $7,000 at 5% and $35,000 at 8%.
Answer by MathTherapy(10552) (Show Source): You can put this solution on YOUR website!

A woman invested 5 times as much at 8% as she did at 5%. The total amount of interest she earns in 1 year from both accounts is $3,150. How much did she invest at each rate?

Let amount invested at 5% be F
Then amount invested at 8% = 5F
Therefore, .05F + .08(5F) = 3,150
.05F + .4F = 3,150
.45F = 3,150
F, or amount invested at 5% = , or $

Amount invested at 8% = 5(7,000), or $

You can do the check!!

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