Ana Maria had $28,000 invest. she divided the money into three different accounts. At the end of the year, she earned $1,160 in interest. the annual yield on each of the three accounts was 3.5%, 4.25% and 4.75%. the amount of money in the 4.75% account was 75% of the amount of money in the 3.5% account. efine the varibles and write a system of equations to represent the situation.

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A: The formula is I = Prt, Where I = interest earned, P = principal, r = rate of interest, t = time.

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A: Given, Principle(P)= $24000 r1= 3% r2= 7% r1=t2= 1year Total interest= $1000

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