According to the economic perspective, intergroup hostility is particularly likely to occur when

The intergroup hostility is particularly likely to occur when there is a scarcity in terms of the material resources that are needed and that when there is a presence of each members of the group to have different types of valuing the material resources that is needed.

a recipe serves 8 people, and calls for 5 lbs of apples and 2 cups of flour. you want to prepare it for 24 people. divide 24 by 8 to get 3, and then multiply your ingredients by 3.

so for 24 people, you'll need 15 lbs of apples, and 6 cups of flour.