Find the probability of the missing outcome

Question

You sold the most for your school's fundraiser so you get to enter the cash vault. There are 1$, 5$, 10$ and 20$ bills. The probability of picking a 1$ bill is 48%, a 5$ bill is 26%, a $20 bill is 10%. What is the probability of picking a 10$ bill?

Answer 1

Assuming those 4 denominations are the only ones present, there is a 100% chance a given bill will be one of those 4. Thus, the chance of it being a $10 bill is 100% - (48% + 26% + 10%) = 100% - 84% = 16%

Answer 2

Assuming those 4 denominations are the only ones present, there is a 100% chance a given bill will be one of those 4. Thus, the chance of it being a $10 bill is 100% - (48% + 26% + 10%) = 100% - 84% = 16%