Question

simple interest = P × r × t


Joe borrowed $900 from Sam for six months. How much will Sam earn if he charges Joe a simple interest rate of 4 percent?



$18



$216



$918

Answer 1

\[\huge\rm I=prt\]
P=principal (amount that thy invested )
r= interest rate (u need in decimal so divide 4/100)
t = time
substitute variables for their values solve for I(interest )

Answer 2

how many amount joe borrowed ? that would be P
interest rate is 4 so divide 4/100
time= ?