Ghazali has 7 stacks of chairs with 20 chairs in each stack. He places each chair equally spaced apart to form the perimeter of a rectangle. The number of chairs along its length is twice the number of chairs along its breadth. How many chairs are there on each side of the rectangle?

I think that there are 2 along it’s breadth and 8 along it’s length

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.