Out of 40 sandwiches, 19 are turkey, 9 are bologna, and the rest are tuna fish. If one sandwich is randomly picked, what is the probability of picking a tuna fish sandwich?__________%

Question

thomaster · Answer

$\bf\huge Welcome~to~\color{#00B4ff}{Open}\color{#7cc517}{Study}~!!!$

How many tuna fish sandwiches are there?

anonymous · Answer

28

thomaster · Answer

There are already 19 turkey sandwiches and 9 bologna sandwiches. If there were 28 tuna fish sandwiches, there should be a total of 19+9+28= 56 sandwiches. This is not the case as there is a total of 40 sandwiches.

thomaster · Answer

You should subtract the amount of turkey and bologna sandwiches from the total of 40, so that the amount of tuna fish sandwiches remains.