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Review Numbers & Money Exchange│ Unit11204.5 FindingFactors ofSimple Interest So far in this chapter, we have used the formula SI = P×R×T to find the simple interest on a loan or investment. However, sometimes you need to find the principal or rate or the time instead of the interestamount see figure (4-5-1).You can remember the different forms ofthe simple interest formula as shown in the diagram belo a-To Find the Principal:P= 𝐒𝐈𝐑×𝐓b-To Find the InterestRate:R= 𝐒𝐈𝐏×𝐓c-To Find the Time:T= 𝐒𝐈𝐏×𝐑Figure (4-5-1): Calculating Simple Interest FactorsS.IR TPS.IP TR S.IP RT