Tony is opening a pizza restaurant and needs to determine the amount of ingredients he will use in his pizzas. he wants the amount of dough for a medium pizza to be 2/3 times the amount of dough for a small pizza. and, he wants the amount of dough for a large pizza to be 5/2 times the amount of dough for a small pizza. also, the amount of doug used for one large pizza should be equal to the amount of dough used for one medium and one small pizza. so, he needs to determine how much dough to use for a small pizza.