eiza666
21.03.2021 •
Mathematics
Heather has divided $5600 between two investments, one paying 9% the other paying 5%. If the return investment is $396, how much does she have in each investment?
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Ответ:
x = 2700 y=2900
Step-by-step explanation:
x+y = 5600
5/100 x + 9/100 y = 396
x+y=5600
5x+9y=39600
5x+5y = 28000
5x+9y=39600
-4y = -11600
y= 2900
x = 5600-2900 = 2700
Ответ:
9x + 6 (5600-x) =39600
9x + 33,600 - 6 = 39600
3x = 6000
X = $2000
So 2000 invested at 9% and 3000 invested at 5%
09(2000) + .05(3000) = 3300
Ответ:
-8.6
Step-by-step explanation: