A roll of ribbon was 12 m long do you cook nine pieces of ribbon that was 0.4 m each to tie some presents he then use the remaining ribbon to make some weeks each rate required 0.6 m for each question explain your reasoning

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.

Answer is a not really sure tho