At lunch 3 1/4 small pizzas were equally devided into 4 people one person eats 1/4 of what he was given how much of a whole pizza did that person eat

3 answers

3 1/4 = 15/4 pizzas
each person got 1/4 * 15/4 = 15/16 of a pizza
Joe ate 1/4 of his portion, so he ate 1/4 * 15/16 = 15/64 of a pizza

Extra credit: who stole the other 3/4 of a pizza? No one buys 3 1/4 pizzas!!
Actually 3 1/4 is equal to 13/4
3/4