Answer:

Step-by-step explanation:
The radical
can be simplified by breaking it down into factors and removing the perfect squares from inside the radical.

25 is a perfect square and is 5 outside the radical.
is a perfect square and is x outside the radical.
is a perfect square and is
outside the radical.
That is one half also 1/2 if this was not what u where looking for then just tell me
215 seconds
100/120=.833
.833×258= 215