Question 731878
A investor invest a total of $2000 in two mutual funds. One earned a profit of 4% while the other earned 2%. His total profit was 56$ How much money did he put in each one? 
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Quantity Equation:  x + y = 2000
Interest Equation: 4x +2y = 5600
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Modify:
2x + 2y = 4000
4x + 2y = 5600
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Subtract and solve for "x":
2x = 1600
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x =  $800 (amt. invested at 4%)
y = $1200 (amt. invested at 2%)
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Cheers,
Stan H.