Answer:
20%
Step-by-step explanation:
To find what percentage is $10 out of $50, we divide 10 by 50:
[tex] \frac{10}{50}=0.2[/tex]
If we want to get the result in percentage form, we simply multiply it by 100%:
[tex]0.2\cdot 100\%=20\%[/tex]
So a tip of $10 on a $50 bill is a tip of 20%.