is the amount borrowed
Principle
is the cost of using money expressed as a percentage of the principle for a given period of time Which is usually per year.
Rate ( interest rate )
is the term or period of the loan
Time
Formula I= prt
Where I= Interest ( amount paid for the use of money)
P= principle ( amount borrowed )
R= rate (percentage of interest being charged)
T= time ( number of periods for which the money will be borrowed/lent/invested)