Jorel Rippon Homework for lesson 2

homework_2.py

# Homework Lesson 2 - Numbers - Homework

# READ CAREFULLY THE EXERCISE DESCRIPTION AND SOLVE IT RIGHT AFTER IT

# ---------------------------------------------------------------------
# Exercise 0 - This exercise is solved so you can have an ----------
# example of how we are expecting your answers to be.
#
# You are shopping online and found two items with prices $5.99
# and $3. Calculate and print the total cost.
item1_price = 5.99
item2_price = 3
total_cost = item1_price + item2_price
print(total_cost)

# ---------------------------------------------------------------------
# Exercise 1 - Travel Distance
# Alex is planning a road trip and wants to know the total distance
# he will be driving. He will travel at an average speed of 60 miles
# per hour and has 4 hours available for driving. Calculate the
# total distance he can cover and print the result.

average_speed = 60
hours_available = 4
total_distance = average_speed * hours_available
print("Alex can drive", 240, "miles.")

# ---------------------------------------------------------------------
# Exercise 2 - Pizza Slices
# A pizza is cut into 8 equal slices. Calculate and print how many
# slices each person will get if there are 4 people sharing the pizza.

pizza_slices = 8
people = 4
slices_per_person = pizza_slices / people
print("Each person gets", 2, "slices")

# ---------------------------------------------------------------------
# Exercise 3 - Shopping Discount
# Lisa wants to buy a pair of shoes that cost $80. The store is
# offering a 20% discount on the shoes.
# Create two variables: original_price and discount_percentage and
# assign the given values.
# Create final_price to calculate the price Lisa has to pay and
# print the result.
# The formula to count the discounted price:
# multiply the original price by the discount percentage and divide by 100.
original_price = 80          # the shoes cost $80
discount_percentage = 20     # 20% discount

# Calculate the discount amount
discount_amount = original_price * discount_percentage / 100

# Subtract discount from original price to get final price
final_price = original_price - discount_amount

# Show the result
print("Original price: $", original_price)
print("Discount:", discount_percentage, "%")
print("Final price Lisa pays: $", final_price)


# ---------------------------------------------------------------------
# Exercise 4 - Temperature Conversion
# You are designing a weather app and need to convert temperature
# from Celsius to Fahrenheit for display. Convert a given
# temperature and print the result.
# To convert Celsius to Fahrenheit you need to multiply
# the temperature in Celsius by 9/5 and add 32 to the result
Celsius = 25
Fahrenheit = (Celsius * 9/5) + 32
print ("temperature in celsius:", Celsius, "°C")
print ("temperature in fahrenheit:",Fahrenheit, "°F")



# ---------------------------------------------------------------------
# Exercise 5 - Gardening
# You're planning a garden and need to calculate the area of
# a circular flowerbed with a radius of 3.5 meters. Calculate
# and print the area of the flowerbed.
# To calculate the area of a circle, multiply π (~3.141) with the square of
# the circle's radius.
# Radius of the circular flowerbed in meters
radius = 3.5

# Approximate value of π (you can use 3.14159 for more precision if you want)
pi = 3.141

# Calculate area: π × radius × radius
area = pi * radius * radius

# Print the result nicely
print("The area of the flowerbed is", area, "square meters.")


# ---------------------------------------------------------------------
# Exercise 6 - Convert Temperature
# You're building a weather app, and you want to display the current
# temperature rounded to the nearest whole number. The
# temperature data you received from the weather service is a float.
# Your task is to convert the float temperature to an integer
# temperature for display.
# As an example, if the temperature is 24.8ºC, you need to print 24.
# Temperature from the weather service (it's a float with decimals)
temperature_float = 24.8

# Convert to integer (rounds down to nearest whole number by default)
temperature_int = int(temperature_float)

# Print the result
print("The displayed temperature is", temperature_int, "°C")


# ---------------------------------------------------------------------
# Exercise 7 - Baking Cookies
# You are baking cookies and have 17 chocolate chips. You
# want to distribute them evenly into 5 cookies. Calculate and
# print the number of chocolate chips in each cookie and the
# remaining chips.
total_chips = 17     # total chocolate chips you have
cookies = 5          # number of cookies you're making

# Calculate chips per cookie (integer division - whole chips only)
chips_per_cookie = total_chips // cookies

# Calculate the leftover chips (remainder)
leftover_chips = total_chips % cookies

# Print the results clearly
print("Each cookie gets", chips_per_cookie, "chocolate chips.")
print("There are", leftover_chips, "chocolate chips left over.")

# ---------------------------------------------------------------------
# Exercise 8 - Fix the Code - Event total earnings
# FOR THIS EXERCISE YOU WILL HAVE AN EXISTING CODE THAT IS
# NOT WORKING CORRECTLY. YOUR TASK IS TO LOOK AT THE CODE
# AND FIX THE PROBLEM SO IT WORKS AS EXPECTED.
#
# Tip: Copy the code and try to run it alone. See the results
# and try to figure out why it is not working.
#
# You organized two events. The first event had 250 participants
# and the second event had 500 participants. With a ticket price
# of $1000, calculate and print the total earning of the two events
# together.
#
# For the values provided we are expecting a total earning of 750000,
# however the code is not working correctly. Can you fix it?
1st_event_participants = 250
2nd_event_participants = 500
ticket_$ = 1000

total_earnings = (1st_event_total + 2nd_event_total) * ticket_$
print(total_earnings)
# Fixed variable names: no starting numbers, no $ symbol
first_event_participants = 250
second_event_participants = 500
ticket_price = 1000

# Calculate total participants
total_participants = first_event_participants + second_event_participants

# Calculate total earnings
total_earnings = total_participants * ticket_price

# Print the result clearly
print("Total earnings from both events:", total_earnings)


# ---------------------------------------------------------------------
# Exercise 9 - Fix the Code - Student age mean
# FOR THIS EXERCISE YOU WILL HAVE AN EXISTING CODE THAT IS
# NOT WORKING CORRECTLY. YOUR TASK IS TO LOOK AT THE CODE
# AND FIX THE PROBLEM SO IT WORKS AS EXPECTED
#
# Tip: Copy the code and try to run it alone. See the results
# and try to figure out why it is not working.
#
# You're a teacher organizing a school event and need to
# calculate the mean age of three students participating in
# the event. The ages of the students are as follows:
#   Student 1: 15 years old
#   Student 2: 17 years old
#   Student 3: 13 years old
#
# For these ages, we expect an age mean of 15.0, but your code
# is returning 36.3. Fix the code to print the correct value.
student_1_age = 15
student_2_age = 17
student_3_age = 13

students_age_mean = student_1_age + student_2_age + student_3_age / 3
print(students_mean_age)
student_1_age = 15
student_2_age = 17
student_3_age = 13

# Fix #1: Use parentheses to add first, then divide
students_age_mean = (student_1_age + student_2_age + student_3_age) / 3

# Fix #2: Print the correct variable name
print("The mean age of the students is:", students_age_mean)
# ---------------------------------------------------------------------
# Challenge (OPTIONAL!): Separating Digits of a Number
# Given the number 1597, your task is to write a Python code
# that separates this number into four variables, each containing
# a digit of the number: 1, 5, 9, and 7. You'll use the
# knowledge of Python operators % and /, variable assignment,
# and working with integers to accomplish this task.

# Tip: To separate the digits of a number, think about how you
# can extract each digit using the remainder (%) and division (/)
# operators. Start by extracting the last digit and then move on
# to the next digits by dividing the number progressively.
# Remember that the remainder when dividing by 10 gives you
# the last digit, and integer division by 10 removes the last digit.
#
# The following code should help you to get an understanding on
# how to get the digits of the number
number = 1597

digit_1 = number % 10
number = number // 10

# print(digit_1) # will print 7
# print(number)  # will print 159

# If you repeat this operation with the second, the third and
# the fourth digits, you will be able to get all the digits.
# Your code here

# Print the result for all four digits
print(digit_1)
print(digit_2)
print(digit_3)
print(digit_4)
number = 1597

# Extract digits from right to left (units → tens → hundreds → thousands)
digit_1 = number % 10          # gets 7 (units place)
number = number // 10          # removes the last digit → now 159

digit_2 = number % 10          # gets 9 (tens place)
number = number // 10          # removes last digit → now 15

digit_3 = number % 10          # gets 5 (hundreds place)
number = number // 10          # removes last digit → now 1

digit_4 = number % 10          # gets 1 (thousands place)
# no need to divide again — we're done

# Print all four digits (in the order they appear in the number)
print(digit_4)   # 1
print(digit_3)   # 5
print(digit_2)   # 9
print(digit_1)   # 7