​​5.    Weekly wages of workers in a factory are as follows:-
 
  Weekly wages (in Rs) 325 - 350 350 - 375 375 - 400 400 - 425 425 – 450 No of workers 0 45 75 60 40  
Find the probability that a worker selected at random earns: - (i) Rs 400 or more (ii) Rs 375 or more but less than Rs 425 (iii) Upto Rs 400                (iv) at least Rs 375         
​answers please in steps