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Katena32 [7]
3 years ago
8

6,000 dollars is invested in two different accounts earning 3% and 5% interest. At the end of one year, the two accounts earned

$220 in interest. How much money was invested at 5%? $2,000 $3,000 $4,000
Mathematics
1 answer:
kap26 [50]3 years ago
8 0

Answer:

$2000

Step-by-step explanation:

6,000 dollars is invested in two different accounts earning 3% and 5% interest.

Let x be the amount invested in account earning 3% interest

So, 6000-x is the amount invested in account earning 5% interest

S.I. =\frac{P\times R\times T}{100}

So, Simple interest for account earning 3% interest

S.I. =\frac{x \times 3 \times 1}{100}

S.I. =0.03x

Simple interest for account earning 5% interest

S.I. =\frac{(6000-x) \times 5 \times 1}{100}

S.I. =0.05(6000-x)

S.I. =300-0.05x

Since we are given that the two accounts earned $220 in interest

So, 0.03x+300-0.05x=220

−0.02x+300=220

80=0.02x

\frac{80}{0.02}=x

4000=x

So, 4000 was invested at 3%

(6000-x)=6000-4000=2000 was invested at 5%

Hence 2000 was invested at 5%

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