My English isn't very good so I don't understand what they want
The formula I=PRT/100
Question:
c)The length of time for $5000 to earn $1000 if invested at 10% per annum.
2.Jahseh invests $6750 at 8.5% per annum.How much interest has he earned and what is the total amount in his account after 4 years?
3.Gekyume invests $10800.After 4 years he has earned $3240 in interest.At what annual rate of interest did he invest his money?
For each problem, plug in the numbers you know.
1) 5000 * 10/100 * T = 1000
2) 6750 * 8.5/100 * 4 = ____
add that to the original amount
3) 10800 * R/100 * 4 = 3240