How we do a code for percent??

Question

Who can help me out

When you go out to eat, you always tip 20% of the bill amount. But who’s got the time to calculate the right tip amount every time? Not you that’s for sure! You’re making a program to calculate tips and save some time.

Your program needs to take the bill amount as input and output the tip as a float.

Sample Input
50

Sample Output
10.0

Answer 1

if you mean what is the percent of x compared to y then its x/y*100

Answer 2

clear what you mean now

20% of a number is just (number * 20 / 100)