Rafael can run 5 laps around the track in 16 minutes. if he runs at the same rate, which of the following proportions can be used to find the number of minutes, m, it takes him to run 20 laps? a) 25/16=20/mb) 5/20=m/16c) 5/16=m/20d) 5/16=20/m

The best answer is D) 5/16=20/m

He secknd step was the answer to them

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.