print "all amounts should be in dollars!"
while True:
P=float(raw_input("enter Principal:"))
i=float(raw_input("enter Percentage of interest rate:"))
t=float(raw_input("enter Time(in years):"))
I=P*t*(i/100)
print "Interest is", I,"dollars"
print "all amounts should be in dollars!"
while True:
P=float(raw_input("enter Principal:"))
i=float(raw_input("enter Percentage of interest rate:"))
t=float(raw_input("enter Time(in years):"))
I=P*t*(i/100)
print "Interest is", I,"dollars"