PLEASE HELP ANSWER please answer 12-24 please its charts and its due tonight please i will give you brainleist if you answer 12-24 pleassse

12. Johns distance : 4km
13. Johns time : 60 hours
14. Johns speed : 15
15. Drews Distance : 4km
16. Drews time : 30 hours
17. Drews speed : 7.5
18. John was the fastest, he ran at 15.

19. Time : 10 hours
Speed : 1.2
20. Distance : 6 miles
Speed : 1.2
21. Distance : 18 miles
Speed : 1.2

Hopefully this is right

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.