Question 911306
We know that the investment for the two accounts is $24000
We know that the account at 9% has 3 times the amount at 7%
x+y=24000
x=3y
3y+y=24000
4y=24000
y=$6000 at 7%
x=$18000 at 9%
Your total for x  is $18000.00
Your total for y is $ 6000.00
Total invested $18000.00 + $ 6000.00=$24000.00
We check
0.09*18000.00+0.07* 6000.00=24000
 1620.00+  420.00=24000
2040=24000
Since this statement is TRUE and neither x nor y  is negative then all is well.
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