12 Questions Math 8: Simple Interest Problem Solving – MATH Solve problems to calculate simple interest using the formula I = Prt. Created in cooperation with Mathy Cathy! Math_by_Kahoot, 02/21/2018 answers Play Which choice best represents the variables in the simple interest formula, I = P • r • t ? INTEREST = PRINCIPAL • RAT • TIME INTEREST = PRINCIPAL • RATE • TIP INTEREST = PRINCIPAL • RATE • TIME INTEREST = PRINCIPAL • RATIO • TIME Which variable in the simple interest formula represents the fee charged for borrowing money? I P r t How much interest will you earn on your investment at the end of 2 years? $59.20 $5.92 $190.92 $2.96 … and 9 more awesome questions! Check them out by clicking “Play”.