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Thelma invested 50,000 in 3 different investments, at 6%, 7% and 9%, with 10,000 more in 9% than in 6%. If at the end of one year she received interest of $3,950 on her investments, how much did she invest in each of her 3 investments?

 Nov 14, 2020
 #1
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HINT: Make a system

 Nov 14, 2020
 #2
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x                                       = 6% amount

x+10000                           = 9% amount

50000    - x     -x -10000   = 7% amunt

 

.06 x  + .09(x+10000) + .07(50000-x-x-10000) = 3950

   solve for x     then you can compute the other amounts listed above

 Nov 14, 2020

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