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serious [3.7K]
3 years ago
15

Boris invested his savings in two investment funds. The $12,000 that he invested in fund a returned a 6% profit the amount that

he invested in fund b returned at 2% profit how much did he invest in Fund b if both funds together returned a 5%
Mathematics
1 answer:
Sedbober [7]3 years ago
4 0

Answer:

$4000

Step-by-step explanation:

Let B represent amount invested in account 'b'.  

We have been given that an amount of $12,000 that Boris invested in fund a returned a 6% profit.

So the profit earned from fund 'a' would be 12,000\times\frac{6}{100}=12,000(0.06).

We are also told that the amount that he invested in fund b returned at 2% profit. So the profit earned from fund 'b' would be B\times\frac{2}{100}=B(0.02)=0.02B.

Further, both funds together returned a 5%. We can represent this information as:

(12,000+B)\times\frac{5}{100}=0.05(12,000+B)

Now, we will equate profit earned from account 'a' and 'b' with profit earned from both accounts as:

12,000(0.06)+0.02B=0.05(12,000+B)

720+0.02B=600+0.05B

600+0.05B=720+0.02B

600-600+0.05B=720-600+0.02B

0.05B=120+0.02B

0.05B-0.02B=120+0.02B-0.02B

0.03B=120

\frac{0.03B}{0.03}=\frac{120}{0.03}

B=4000

Therefore, Jason invested $4000 in fund 'b'.

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