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vodka [1.7K]
3 years ago
15

What is 20% of 40 end result

Mathematics
1 answer:
AveGali [126]3 years ago
3 0

Answer:

32

Step-by-step explanation:

20% is the same thing as saying 0.20

0.20×40=8

40-8=32

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Step 1; First we must calculate how much interest is generated for a single year. The annual interest rate is 4.5% i.e. 4.5% of 10,000 dollars which equals 0.045 × 10,000 = 450 dollars a year. As the years pass, more and more will be put into the account due to interest.

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The money needed to be added through interest = 13,500 - 10,000 = 3,500 dollars.

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The number of years to reach 13,500 dollars = \frac{3,500}{450} = 7.777 years. By rounding this value to the nearest tenth, we get 7.8 years.

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