The sum of 3 numbers is 108. The first number is 8 less than the second. The third number is 3 times the first. What are the numbers?

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.

Precalculus question, image attached.

A(1,1) b(-3,0) c(-4,-1) d(3,-2) drag it to correct position