A certain number of students decided to go on a picnic and planned to spend Rs. 96 on eatables. Four of them, however did not turn up. As a consequence, the remaining ones had to contribute Rs. 4 each extra. The number of students who attended the picnic was:

• TOTAL MONEY = 96
  LET NO OF PERSONS BE X
  EACH PERSON NEED TO PAY = 96/X ==> LET IT BE K ------(1)
  BUT 4 MEMBERS HAVE NO MONEY SO COST PER EACH PERSON INCREASED BY K+4
  SO 96/(X-4)=K+4------------- (2)
  
  BY THIS TWO EQUATIONS WE GET KX=96
  BY SOLVING WE GET X-K=4
  BY SOLVING AGAIN WE GET K=8
  SO X WE GET , X=12
  SO 12 IS THE ANSWER........
  
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