I need so much help on this question, every time I put an answer in it says it’s wrong and I don’t know why. Please help!!

Answer:
the winner was 1.4m/s quicker
Step-by-step explanation:
i think it is:
average speed= m:s
fay= 300: 50= 6m/s
tia= 300: 65= 4.6m/s
6-4.6= 1.4