SOLUTION: Rachel invested her savings in two investment funds. The amount she invested in Fund A was 4 times as much as the amount she invested in Fund B. Fund A returned a 7% profit and Fun

Question 930126: Rachel invested her savings in two investment funds. The amount she invested in Fund A was 4 times as much as the amount she invested in Fund B. Fund A returned a 7% profit and Fund B returned a 6% profit. How much did she invest in Fund B, if the total profit from the two funds together was $2720?
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
x = amount invested in A
y = amount invested in B
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x = 4y
0.07x + 0.06y = 2720
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put the system of linear equations into standard form
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x - 4y = 0
0.07x + 0.06y = 2720
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copy and paste the above standard form linear equations in to this solver:
https://sooeet.com/math/system-of-linear-equations-solver.php
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solution:
x = amount invested in A = 32000
y = amount invested in B = 8000
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Solve and graph linear equations:
https://sooeet.com/math/linear-equation-solver.php
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Solve quadratic equations, quadratic formula:
https://sooeet.com/math/quadratic-formula-solver.php
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Solve systems of linear equations up to 6-equations 6-variables:
https://sooeet.com/math/system-of-linear-equations-solver.php
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