A tree casts a shadow that is 40-feet long. At the same time a 6-foot man standing in the same line with the tree casts a shadow that is 15 feet.
How tall is the tree?

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.