a group of friends goes for dinner and gets bill of Rs 2400
. Two of them says that they have forgotten their purse so
remaining make an extra contribution of Rs 100 to pay up
the bill. Tell the no. of person in that group

Answer Posted / rak r

at first they have divided 2400 among themselves=2400/x
later 2 of them forgot their purse so those 2 persons amount should be shared by x-2 members that is what 100 is;
therefore (2400/((x)(x-2)))*2=100;
(x-8)(x+6)=0
therefore x=8

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