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25 September, 15:07

Lisa invest $4000 in two types of bonds, bond A and bond B a offers 10%return. Lisa invest $x and $y inbond B her tostados investment is 350. The system of linear equations defining the situation is a. x+y=4000and 10x+6y=340

B. X+y=4000and 0.06x+0.1y=340

C. x+y=340and 0.1x+0.06y=4000

D. X+y=4000and 0.1x+0.06y=340

The amount Lisa invest Ed at the rate of 10%is

a. 1000

B. 1500

C2500

D3500 and the amount she invested at the rate of 6%is

A. 500

B1500

C2500

D3000

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Answers (1)
  1. 25 September, 18:48
    0
    x+y=4000 ... (1)

    10x+6y=340*100⇒5x+3y=17000 ... (2)

    (2) - 3 * (1) ⇒ 2x=5000⇒x=2500, y=4000-2500=1500
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