Jamie Brought 5/8 Pounds Of What Flour.he Also Brought 1/4 Of White Flour.how Much Flour Did He Buy

If a recipe calls for 2 1/2 cups of flour and you want to make five times the recipe, how much flour do you need?

I am sure you are not asking us how to multiply, I guess you are trying to ask whether all  ingredients propotionatly increase If you want 5 times the end product.Where flour or other staple carbohydrates like rice forms the bulk of the ingredients and generally it can just be multiplied or divided as your require, other ingredients particularly water will not directly be proportionate. As a general rule, the more you increase the amount of flour/rice etc, the lesser proportion of water would be required. Similarly, salt and various spices work the same way. As in everything in life, there are always the odd exceptions.For example, when cooking rice, if you are cooking 1 cup, may be the general rule of 1:2 water may give good results (again depends on the type, age of rice and the cooking method). Lets take rice cooking in a rice cooker and for 1 cup if 2 cups of water works fine, then for 3 cups rice maybe I'll add 5 1/2 cups of water or the rice will be mushy. Easy to understand in this instance, same vessel with same surface area of standing water given the same heat. Rice absorbs water and the heat in water also cooks it, needs a particular time for cooking to happen, meanwhile water is evoporating from the surface. Water is bound to evaporate away with boiling in a given time if the volume is less. So with more volume you need less propotion of water for rice to cook adequately. Different senario with flour...