At a deli, 56 sandwiches were sold during lunchtime. Twenty-five percent of the sandwiches sold were tuna salad sandwiches. How many of the sandwiches sold were not tuna salad?

Answer - 42 Sandwiches

Explanation -

56 is what you start out with. you will need to find 25% of those 56 to see the remaining. So 25% of 56 is 14 because. 25 x 56 is 14. You then subtract 56 from the 14 Tuna sandwiches and you're left with 42.