SOLUTION: Margo borrows $100, agreeing to pay it back with 8% annual interest after 18 months. How much interest will she pay? Round your answer to the nearest cent, if necessary.

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Question 1195158: Margo borrows $100, agreeing to pay it back with 8% annual interest after 18 months. How much interest will she pay?
Round your answer to the nearest cent, if necessary.

Answer by ikleyn(52803) About Me  (Show Source):
You can put this solution on YOUR website!
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Margo borrows $100, agreeing to pay it back with 8% annual interest after 18 months.
How much interest will she pay?
Round your answer to the nearest cent, if necessary.
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Simple interest formula is  I = P*r*t = 100%2A0.08%2A%2818%2F12%29 = 8%2A%283%2F2%29 = 12 dollars.


ANSWER.  Simple interest after 18 months is 12 dollars.

Solved.

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To see many other similar  (and different)  solved problems on simple interest accounts,  look into the lesson
    - Simple interest percentage problems
in this site.


Learn the subject from there.