Exercise: Pizza calculator

Task

You are ordering pizza as a group. Each person eats three slices, a pizza has eight slices and costs 11.50 euros, and 10 percent tip goes on top of the total. Write a program that asks for the number of people and then prints how many pizzas you have to order, what everything costs together and how much each person contributes.

Slices may be left over, but nobody should go short: seven people need 21 slices, and two pizzas are not enough for that, it has to be three.

What it should look like

How many people? 7
You need 3 pizzas.
Total with tip: 37.95 euros
Per person: 5.42 euros

Your program

SLICES_PER_PERSON = 3
SLICES_PER_PIZZA = 8
PRICE_PER_PIZZA = 11.50
TIP = 0.10

people = int(input("How many people? "))

# How many slices are needed, and how many pizzas is that?

# What does everything cost, and what does each person pay?

The names in capitals at the top are values that do not change in the program; this is how constants are usually written in Python. If the pizzeria raises its prices, you only change this one line.

SLICES_PER_PERSON = 3
SLICES_PER_PIZZA = 8
PRICE_PER_PIZZA = 11.50
TIP = 0.10

people = int(input("How many people? "))

slices = people * SLICES_PER_PERSON
pizzas = (slices + SLICES_PER_PIZZA - 1) // SLICES_PER_PIZZA
total = pizzas * PRICE_PER_PIZZA * (1 + TIP)
share = total / people

print(f"You need {pizzas} pizzas.")
print(f"Total with tip: {total:.2f} euros")
print(f"Per person: {share:.2f} euros")

For the quick ones

Also ask how many slices each person should get, and print how many slices are left over at the end.