Exercise 1

How long does it take a principal of 25,000 at a simple interest rate of 5% to become30,000?

Exercise 2

45,000 is deposited into a savings account.  After one year, 4 months and 20 days it totals52,500. Calculate the simple interest rate for this account.

Exercise 3

Determine the simple interest rate applied to a principal over 20 years if the total interest paid equals the borrowed principal.

Exercise 4

How long does it take a principal payment to triple at a simple interst rate of 6%?

Exercise 5

 Find the total amount of simple interest that is paid over a perod of five years on a principal of 30,000 at a simple interest rate of 6%.</span>                 <h2>Exercise 6</h2> <span class="actividades_v" style="margin-top:30px;">Calculate the  total worth of an investment after six months with a principal  of10,000 at a simple interest rate of 3.5%.

Solution of exercise 1

How long does it take a principal of 25,000 at a simple interest rate of 5% to become30,000?

Solution of exercise 2

45,000 is deposited into a savings account.  After one year, 4 months and 20 days it totals52,500. Calculate the simple interest rate for this account.

360 + 120 + 20 = 500 days

I = 52 500 − 45 000 = 7,500                 <img src="https://www.superprof.co.uk/resources/wp-content/uploads/2019/06/70-15615366339781-8699.gif"     >                 <img src="https://www.superprof.co.uk/resources/wp-content/uploads/2019/06/71-15615366340716-6072.gif"     >                                                                                   <h2>Solution of exercise 3</h2>                 Determine the  simple interest rate applied to a principal over 20 years if the total interest paid equals the borrowed principal. <span class="escarlata">I = P </span>                 <img src="https://www.superprof.co.uk/resources/wp-content/uploads/2019/06/72-15615366341614-6450.gif"     >                 <img src="https://www.superprof.co.uk/resources/wp-content/uploads/2019/06/73-15615366343365-9208.gif"     >                                                                                  <h2>Solution of exercise 4</h2>                 How long does it take a principal payment to triple at a simple interst rate of 6%?                 <span class="escarlata">I = 3 · P </span>                  <img src="https://www.superprof.co.uk/resources/wp-content/uploads/2019/06/87-15615366344057-4122.gif"     >                 <img src="https://www.superprof.co.uk/resources/wp-content/uploads/2019/06/88-15615366345928-4190.gif"     >                                                                 <h2>Solution of exercise 5</h2>                 Find the total amount of simple interest that is paid over a perod of five years on a principal of 30,000 at a simple interest rate of 6%.

Solution of exercise 6

Calculate the total worth of an investment after six months with a principal of $10,000 at a simple interest rate of 3.5%.

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Emma

I am passionate about travelling and currently live and work in Paris. I like to spend my time reading, gardening, running, learning languages and exploring new places.

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