Y =
![3\sqrt[3]{3}](https://tex.z-dn.net/?f=%203%5Csqrt%5B3%5D%7B3%7D%20)
81 is the same as 3 x 3 x 3 x 3. Therefore we can take out three of the four 3s and leave one inside the cube root radical.
Answer:
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Time = distance / speed
Samma : 200/25.98 = 7.70 meters per second
Tom : 100 / 12.54 = 7.97 meters per second
so the faster runner is Tom