Final answer:
Jamall has $3300 in the first account and $2700 in the second account.
Step-by-step explanation:
To solve this problem, we can set up a system of equations. Let's say the amount invested in the first account is 'x' and the amount invested in the second account is 'y'. We can write the following equations:
x + y = 6000 (since Jamall invests a total of $6000)
0.02x + 0.12y = 390 (since the interest earned in the first year is $390)
Solving these equations simultaneously will give us the values of 'x' and 'y'.
Multiplying the first equation by 0.02, we get:
0.02x + 0.02y = 120
Now, subtracting this equation from the second equation, we get:
0.12y - 0.02y = 390 - 120
0.1y = 270
Simplifying, we find:
y = 2700
Substituting this value back into the first equation, we get:
x + 2700 = 6000
Solving for 'x', we find:
x = 3300
Therefore, Jamall has $3300 in the first account and $2700 in the second account.