Question

Penn buys 3 large sandwiches to serve at a party. Penn cuts the sandwich into 1/4 equal pieces to serve. Penn didn't get any of the sand-which Write an equation to represent the number of guests served if there were no leftovers. How many ok guests were served

Answer 1

3 ÷ 1/4 = x
3/1 X 4/1 = x
12 = x

There are 12 guests.
When you convert division on fractions into multiplication, it swaps the numbers.