Pinki M. answered 04/12/20
Hi i am pinki, i love to teach mathematics
we use "Speed =Distance/Time" formula here
Speed of Bowser = 100 / 5 m/s =20 m/s
Speed of Princess peach = 50 / 10 m/s =5 m/s
Speed of Yoshi = 75/15 m/s = 5 m/s
so it is clearly Bowser had the fastest average speed