exercise four part one | Python Fiddle

cars = 100# represents the total number of cars
space_in_a_car = 4.0 #underscores are used to put "imaginary" spaces in variable names
#it was not necessary to use a float in 4 as the final result is not a fraction regardless of whether ints or floats are used
#the only difference if a float is used is that there will be a ".0" after the final result of 120
drivers = 30# number of drivers available
passengers = 90# number of people that need to be transported
cars_not_driven = cars - drivers# cars that won't be used due to a lack of drivers
cars_driven = drivers# only one driver per car possible
carpool_capacity = cars_driven * space_in_a_car# the total number of available seats
average_passengers_per_car = passengers / cars_driven# the average number of people in each car
#the following lines display the numbers on screen surrounded by actual words
print "There are", cars, "cars available." #number of cars available
print "There are only", drivers, "drivers available." #number of drivers present
print "There will be", cars_not_driven, "empty cars today." #number of cars that can't be driven
print "We can transport", carpool_capacity, "people today." #total number of people that can be transported
print "We have", passengers, "to carpool today." #the total number of passengers
print "We need to put about", average_passengers_per_car, "in each car." #the number of passengers that will be placed in each car

#study drills:
#assuming all other parts of the program remained the same, the compiler 
#was unable to locate car_pool_capacity as carpool_capacity was the variable 
#actually used

#floating point numbers are the way in which numbers are stored on computer in order to avoid being limited by a fixed number of digits

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