Answer:
1 gram
Step-by-step explanation:
Skateboarder B. 4.24 will show as a different time since the stopwatch rounds to the nearest tenth and to round up it has to be 0.5+ and to round down you need 0.4 or below and in this case Skateboarder B. has a time of 4.24 thus it has a different time than the other times.
I Hope this helped you!
(-3+2) that should be it o think