Answer:
PEMDAS
Your question was how. teehee
Answer:
Tran's hamster is faster as it took his hamster 19 seconds which is 4 seconds faster than Maria's hamster. I know this because the data shows Maria's hamster took 19 second and Tran's took 15 seconds to run through the maze hence Maria's hamster was slower and Tran's won. You can use the calculation 19-15=4 so the difference is 4.
3060
Because you multiply the mass value by 1000
I will try to do this and answer this later if I can.
