For the student council meeting after school, Mr. Aggie brought 7 loaves of homemade raisin bread. Each loaf was cut into 20 equal pieces. The sixth-grade students ate 1 whole loaf and 4 slices of raisin bread. The seventh-grade students ate 9 slices of raisin bread. The eighth-grade students ate 6 slices of raisin bread.

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.

The answer is the first one

1.5 pounds because you put 9over 6 and then divide by 6