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In this exercise you're going to write some code to help you cook a brilliant lasagna from your favorite cooking book.
You have four tasks, all related to the time spent cooking the lasagna.
Define the expected_minutes_in_oven binding to check how many minutes the
lasagna should be in the oven. According to the cooking book, the expected
oven time in minutes is 40:
expected_minutes_in_oven()
// Returns: 40
Define the remaining_minutes_in_oven function that takes the actual minutes
the lasagna has been in the oven as a parameter and returns how many minutes
the lasagna still has to remain in the oven, based on the expected oven time
in minutes from the previous task.
remaining_minutes_in_oven(30)
// Returns: 10
Define the preparation_time_in_minutes function that takes the number of
layers you added to the lasagna as a parameter and returns how many minutes you
spent preparing the lasagna, assuming each layer takes you 2 minutes to
prepare.
preparation_time_in_minutes(2)
// Returns: 4
Define the elapsed_time_in_minutes function that takes two parameters: the
first parameter is the number of layers you added to the lasagna, and the
second parameter is the number of minutes the lasagna has been in the oven.
The function should return how many minutes you've worked on cooking the
lasagna, which is the sum of the preparation time in minutes, and the time in
minutes the lasagna has spent in the oven at the moment.
elapsed_time_in_minutes(3, 20)
// Returns: 26
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