SOLUTION: Jennifer invested $500 part at 7% per annum and the rest at 10% per annum. after one year total interest earned was $44. how much did she invest at each rate

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Question 842593: Jennifer invested $500 part at 7% per annum and the rest at 10% per annum. after one year total interest earned was $44. how much did she invest at each rate
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

Jennifer invested $500 part at 7% per annum and the rest highlight_green%28x%29at 10% per annum. 

  .10x + .07(500-x) = $44

       x = 9/.03 = $300 at 10% and $200 at 7%

CHECKING our answer***

  $30 + $14 = $44

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