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Interest (Simple) - Interest from Principle, Rate, and Time (Level 3)

The topics in this unit focus on introducing simple interest, principle, rate, and time, and how to calculate any of them given the others. Work on practice problems directly here, or download the printable pdf worksheet to practice offline.

Interest (Simple) - Interest from Principle, Rate, and Time

Complete these online problems with 80% or 4 correct answers in a row. Results are immediate.

What is the simple interest in this situation?

Principle =$800Rate =35%Time =9yrsInterest =$?\begin{align*}\text{Principle } &= \$800\\ \text{Rate } &= 35\%\\ \text{Time } &= 9\text{yrs}\\ \\ \text{Interest } &= \$?\end{align*}