70% of the students who joined XLRI last year play

football, 75% play cricket, 80% play basketball and

85% play carrom. The minimum percentage of

students who play all four games is:

• In this, we can go in inverse direction
  Suppose there are 100 students. Now from this we can say that
  30 students(30% of 100) do not play football,
  25 students(25% of 100) do not play cricket,
  20 students(20% of 100) do not play basketball,
  15 students(15% of 100) do not play carrom
  
  Now adding all the above we get,
  30+25+20+15=90.
  
  Means 90 student play nothing, so
  100-90=10 (plays all the game)
  
  Hope it helps..
  
  
• 9 years agoHelpfull: Yes(0) No(0)