SOLUTION: Ling invested some money at 7% interest. Ling also invested $137 more than 3 times that amount at 14% . How much is invested at each rate if Ling receives $1489.18 i

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Question 1050593: Ling invested some money at
7%
interest. Ling also invested
$137
more than
3
times that amount at
14%
. How much is invested at each rate if Ling receives
$1489.18
in interest after one year? (Round to two decimal places if necessary.)
Answer by addingup(3677) About Me  (Show Source):
You can put this solution on YOUR website!
0.07x+0.14(3x+137) = 1489.18
0.07x+0.42x+19.18 = 1489.18
0.49x = 1470
x = 3000 is invested at 7%
and
(3*3000)+137 = 9137 is invested at 14%