C5 C7 C6 1000 10 005 500. The formula for calculating simple interest is. I Prt becomes r IPt Remember to use 1412 for time and move the 12 to the numerator in the formula above.
Compound Interest Formula P Principle i Annual interest rate t number of compounding period for a year i r n number of times interest is compounded per year r Interest rate In decimal.
P Principal which is your initial amount r interest rate as a decimal. Simple interest is more advantageous for borrowers than compound. P x r x t 100. P Principal which is your initial amount r interest rate as a decimal.