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3 March, 00:59

You have $6000 to invest in two stock funds. The first fund pays 5% annual interest and the second account pays 9% annual interest. If after a year you have made $380 in interest, how much money did you invest in each account

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  1. 3 March, 01:23
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    First fund: $4000

    second account: $2000

    Step-by-step explanation:

    invest x for first fund (A) and y for second fund (B)

    interest for A: x * 0.05

    interest for B: y * 0.09

    0.05 x + 0.09 y = 380 ... (1)

    x + y = 6000 ... (2)

    y = 6000 - x ... substitute y in (1)

    0.05 x + 0.09 (6000 - x) = 380

    0.05x + 540 - 0.09x = 380

    0.04 x = 160

    x = 4000

    y = 6000 - 4000 = 2000

    check: 4000 x 0.05 + 2000 x 0.09 = 200 + 180 = 380
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