Calculate Damage - Beginner

Challenge Difficulty: Easy | Estimated completion time: ~5 minutes

Create a function that takes damage and speed (attacks per second) and returns the amount of damage after a given time.

Examples

damage(40, 5, "second") ➞ 200
 
damage(100, 1, "minute") ➞ 6000
 
damage(2, 100, "hour") ➞ 720000

Notes

Return “invalid” if damage or speed is negative.

Solution

Python
Output