Complete Program

Here is the complete program:

'Car insurance program

PRINT "Please enter the base rate"
INPUT BASERATE

PRINT "Please enter annual mileage"
INPUT MILEAGE

IF MILEAGE < 20000 THEN
 
  IF MILEAGE < 10000 THEN
    LET DISCOUNT = .1
  ELSE
    LET DISCOUNT = .05
  END IF

ELSE
  LET DISCOUNT = 0
END IF

PRINT "Your base rate is", BASERATE
PRINT "Your discount is", DISCOUNT
PRINT "You pay", BASERATE * (1 - DISCOUNT)

END

Remember this point:

Complete control structures are treated as a "unit." They (and the statements they control) are completely included or completely excluded from execution.

In the previous (breakfast beverage) program, the false branch had a nested IF. In this program, the true branch has a nested IF.