Answer:
T = 100I/PR
Step-by-step explanation:
Given the amount invested for a particular period of time at an interest rate, the equation that can model the Interest achieved on investment is expressed using the simple interest formula as shown;
Simple Interest = PRT/100 where;
P is the principal (amount invested)
R is the rate (in %)
T is the time (in years)
From the equation I = PRT/100, we need to express tht time T as a function of the rest of the variable as shown;
I = PRT/100
cross multiply
100I = PRT
Divide both sides by PR
100I/PR = PRT/PR
100I/PR = T
Hence the the time it takes to earn a certain amount of interest on a principal amount in an investment with simple interest is expressed as
T = 100I/PR
