Question

Please solve the following in Python 3 only.

Also, share code and show output.

A software company sells a package that retails for $99. Quantity discounts are given according to the following table.

Quantity Discount
10–19 20%
20–49 30%
50–99 40%
100 or more 50%

Write a program that asks for the number of units sold and computes the total cost of the purchase.

Input Validation: Make sure the number of units is greater than 0.

Answer 1

print("Enter the number of units sold: ")
# input the number of units sold
n=int(input())
total=0
# if n<0 then it is an invalid input
if n<0:
print("Invalid input!!")
else:
# calculate the total cost
total = n*99
# now subtract the discount from the total cost based on the given conditions
if n>=1 and n<=9:
total = total - 0
elif n>=10 and n<=19:
total = total - 0.2*total
elif n>=20 and n<=49:
total = total - 0.3*total
elif n>=50 and n<=99:
total = total - 0.4*total
else:
total = total - 0.5*total
print("The total cost of the purchase =",total)