Sam is making dinner for four people the recipe calls for 15 ounces of steak how much steak will he need if he makes dinner for 10 people?

You need to figure out how much steak per person (15 ounces/ 4 people = 3.75 ounces/person) then multiply 3.75 * 10 people = 37.5 ounces if you need pounds then divide it by 16 to get the number of pounds.