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iris [78.8K]
3 years ago
8

A person invested $20,000 into two accounts that pays 2.5% and 3% simple interest annually, respectively. find the amount invest

ed into the two accounts if the total interest earned after one year is $540
Business
2 answers:
denpristay [2]3 years ago
8 0
Let:
x = amount in the account invested in 2.5%
20000 - x = amount in the account invested in 3%

Solution:
.025x + .03 (20000 - x) = 540
.025x + 600 - .03x = 540
-.005x + 600 = 540
-.005x = 540 - 600
-.005x = -60
x = 12000

Therefore, that person invests 12,000 at 2.5%
and
20,000 - 12,000 = 8,000 at 3%
marusya05 [52]3 years ago
6 0

<u>Answer:</u> The amount invested in first account is $12,000 and in second account is $8000

<u>Explanation:</u>

We are given:

Total amount invested = $20,000

Total interest earned = $540

Let the amount invested in account 1 having 2.5 % ROI be 'x'

So, the amount invested in account 2 having 3 % ROI will be (20,000-x)

To calculate the simple interest, we use the equation:

A=\frac{PRT}{100}

For account 1:                             For account 2:

P = x                                            P = 20,000 - x

R = 2.5 %                                     R = 3 %

T = 1                                             T = 1

Putting values in above equation, we get:

\frac{x\times 2.5\times 1}{100}+\frac{(20000-x)\times 3\times 1}{100}=540\\\\0.025x+600-0.03x=540\\\\x=12000

Amount invested in account 1 having 2.5 % ROI = x = $12000

Amount invested in account 2 having 3 % ROI = (20,000 - x) = (20,000 - 12,000) = $8000

Hence, the amount invested in first account is $12,000 and in second account is $8000

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