How to Use the Simple Interest Formula (I=Prt) to Find P | Part 2 of 3 | Minute Math

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In this video we learn how to Use the Simple Interest Formula (I=Prt) to Find P. The simple interest formula is I=Prt. I = interest, P = principal, r = rate, and t = time. We solve the following simple interest word problem: Find the principal invested if $178 interest was earned in 2 years at an interest rate of 4%.

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CC Licensed Content, Original

Revision and Adaptation. Provided by: Minute Math. License: CC BY 4.0
CC Licensed Content, Shared Previously

Marecek, L., Anthony-Smith, M., & Mathis, A. H. (2020). Use the Language of Algebra. In Prealgebra 2e. OpenStax. License: CC BY 4.0. Access for free at

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