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Helpppp need fast as possible Last year Debra had 30,000 to invest how much do she invest each account

Helpppp need fast as possible Last year Debra had 30,000 to invest how much do she-example-1

1 Answer

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Answer
First account = $25,000
second account =$5,000

Step-by-step explanation
The formular for simple interest is
Interest = PRT
where P⇒money invested
R⇒rate
T⇒ Period (number of years)

Let x to be the money invested in the first account.
Money invested in the second account = 30,000 - x

∴ (x × 0.05×1) + ((30,000-x)×0.07×1) = 1600
0.05x+2100-0.07x = 1600
-0.02x = -500

x = -500/-0.02
=25,000

Money invested in the first account = $25,000
Money invested in the second account = (30,000-25000) = $5000

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