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asambeis [7]
2 years ago
5

You invest $20,000 in two accounts paying 12% and 11% annual interest, respectively. How much was invested in each account if, a

fter one year, the total interest was $2,255.00.
Mathematics
1 answer:
Alika [10]2 years ago
3 0

Answer: \$5500, \$14,500

Step-by-step explanation:

Given

\$20,000  is invested in two accounts with a 12% and 11% rate of interest.

Total interest after a year is  \$2255

Suppose x amount is invested in first, so the remaining amount is invested in other

Simple interest and Compound interest is the same for a year

\therefore \text{Interest}=\dfrac{P\times R\times T}{100}

For first investment

I=\dfrac{x\times 12\times 1}{100}\\\\I=0.12x

For second investment

II=\dfrac{\left(20,000-x\right)\times 11\times 1}{100}\\\\II=0.11\left(20,000-x\right)

The sum of the two must be \$2255

\Rightarrow 0.12x+0.11\left (20,000-x\right)=2255\\\Rightarrow 0.01x=2255-2200\\\\\Rightarrow x=\dfrac{55}{0.01}\\\\\Rightarrow x=\$5500

Remaining amount is

\Rightarrow 20,000-5500\\\Rightarrow \$14,500

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