A tyre manufacturing company kept a record of the distance covered before a tyre needed to be replaced. The table shows the results of 1000 cases.  [CBSE 2012 (March)]

Table

Distance (in km)	less than 400	400 to 900	900 to 1400	more than 1400
Frequency	210	325	385	80

If you buy a tyre of this company, what is the probability that:

(i) it will need to be replaced before it has covered 400 km?
(ii)  it will last more than 900 km?
(iii)  it will need to be replaced after it has covered somewhere between 400 km andb 1400 km?
(iv)  it will not need to be replaced at all?
(v)  it will need to be replaced?