This math video tutorial explains how to use the simple interest formula to solve word problems. It explains how to calculate the interest earned over a period of time, how to calculate the annual interest rate percentage, and how to calculate the time or the number of years for a savings account to reach a certain value. It contains plenty of examples and practice problems.
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Pre-Algebra Video Playlist:
https://www.youtube.com/watch?v=WJqw-cxvKgo&list=PL0o_zxa4K1BVoTlaXWFcFZ7fU3RvmFMMG
Algebra Online Course:
https://www.udemy.com/algebracourse7245/learn/v4/overview