3 years ago

Find the rate if the principal is $900, the time is 3 years, and the interest is $135. A) 5% B) 7.5% C) 15% D) 20%

1 answer:

3 0

The answer would be A) 5%. You can solve this by dividing 135$ by three years to get 45. then divide 45 by 900 to get 0.05 which is 5% in decimal form.

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Step-by-step explanation:

The "Rule of 72" is a easy way to calculate how much time an investment will take to double with a given fixed annual rate of interest.

Just we have to divide 72 by the annual rate of return(r), we can get a rough estimate of how many years it will take to double the initial investment .

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