Practice: Float Operators

Float Operators in Python

As mentioned briefly in the previous exercise on floats, the arithmetic operators used with integers can also be used with floating-point numbers and result in another float:

• Addition (+), subtraction (-), and multiplication (*) work the same.
• Floor division (//) and modulus (%) assume division a whole number of times, but still output a float.
• Parentheses (()) are still useable and the order-of-operations is the same.

In this exercise, you will be getting some additional practice using the arithmetic operators with float values.

You are welcome to reference the previous exercises as you work on this one.

Practice: Floating-Point Arithmetic

1. Define a variable named soup_can_cost, and assign it the value 2.95.
2. Define a variable named soup_can_qty, and assign it the value 8.0.
3. Define a variable named soda_pack_cost, and assign it the value 13.84.
4. Define a variable named soda_pack_qty, and assign it the value 2.0.
5. Define a variable named sales_tax_percent, and assign it the value 7.75.
6. Define a variable named transaction_cost, and assign it the total cost paid for all shopping list items above, using the variables above. Individual item costs are pre-tax.
7. Print the value contained in the transaction_cost variable.
8. Define a variable named cash_in_wallet, and assign it the value 87.25.
9. Define a variable named cash_remaining, and using the variables above, assign it your initial cash minus the cost of the transaction.
10. Print the value contained in the cash_remaining variable.

> 
55.2542
31.9958

  soup_can_cost = 2.95
  soup_can_qty = 8.0
  soda_pack_cost = 13.84
  soda_pack_qty = 2.0
  sales_tax_percent = 7.75
  transaction_cost = (1 + sales_tax_percent / 100.0) * (soup_can_cost * soup_can_qty + soda_pack_cost * soda_pack_qty)
  print(transaction_cost)

> 
55.2542

  cash_in_wallet = 87.25
  cash_remaining = cash_in_wallet - transaction_cost
  print(cash_remaining)

> 
31.9958