Sophia and London work at a dry cleaners ironing shirts. Sophia can iron 40 shirts per hour, and London can iron 25 shirts per hour. Sophia and London worked a combined 11 hours and ironed 365 shirts . Write a system of equations that could be used to determine the number of hours Sophia worked and the number of hours London worked. Define the variables that you use to write the system .

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.