a new coach was appointed for a football team,in the middle of a season.after the new coach took over,the team won 85 5/7% of the 35 matches that it played.however,the overall performance of the team for the entire season was only 50%.what could be the minimum no. of matches the team played that season before the new coach took over?pl. provide sol. also

1) 25
2) 27
3) 24
4) 21

• After the coach was appointed the team won 85 5/7 % i.e 6/7 of 35 matches , But overwall performance was only 50%
  Let they played x matches before new coach is assigned and won about y matches
  Success rate = (No. Of Success)/(No. of attempt)
  No. of success = no. of match won = 6/7 *35 + y = 30 + y
  No. of attempt= 35+x
  
  Success rate = (30+y)/(35+x) = 1/2 ( 50% given)
  x = 60 + 2*y -35
  Now we need minimum no of matches to be played before the new coach took over.... Hence put y = 0
  i.e no. of match won before coach took over = 0
  x = 60 + 0 - 35
  x = 25 Ans
• 8 years agoHelpfull: Yes(1) No(0)