Abby and Andrew are selling wrapping paper for a school fundraiser. Customers can buy rolls of plain wrapping paper and rolls of shiny wrapping paper. Abby sold 6 rolls of plain wrapping paper and 4 rolls of shiny wrapping paper for a total of $104.00. Abby sold 8 rolls of plain wrapping paper and 12 rolls of shiny wrapping paper for a total of $232.00. Find the cost of the shiny wrapping paper.

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.