Which statement is True about the following linear expression?

Simplify the expression. -2/5(10+15m-20n)

Alana has 12.5 cups of flour with which she is baking four loaves of raisin bread and one large pretzel. the pretzel requires 2.5 cups of flour to make. how much flour is in each loaf of raisin bread? explain the steps to follow to get the answer.

Hi i’m not sure how to do question 20 if u could explain how to do it that’d b great