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
Answers were Sorted based on User's Feedback
Answer / saravanan.p
Let 'x' be the number of perons in the group and let 'y' be
amount per head which they have to pay.
Then xy = 2400.
or y = 2400/x
Since two friends have forget the purse, x-2 persons should
share the total amount(2400).
If they share, they have to make an extra contribution of
Rs 100 to pay up the bill
That is x-2 persons should pay y+100 each
or (x-2)(y+100) = 2400
or y+100 = 2400/(x-2)
or y = 2400/(x-2) - 100
Therefore we have got two equations namely,
y= 2400/x and y = 2400/(x-2) - 100
Comparing these two, we get
2400/x = 2400/(x-2) - 100
Solving this we get
x^2 - 2x -48 = 0
or (x-8) (x+6) = 0
or x = 8 or x = -6
Since 'x' denote the number of persons, it should be
So, x = 8.
|Is This Answer Correct ?||271 Yes||11 No|
Answer / guest
|Is This Answer Correct ?||86 Yes||7 No|
Answer / arun
if 'n' is the total no. of persons,
(1). for 2 persons in 'n' ,(n-2) of them have to pay a
total of (n-2)*100 in extra
(2) so for 'n' persons,(n-2) persons have to pay a total of
n(n-2)*100/2 = 2400
ie n(n-2)=48 =>n=8.
|Is This Answer Correct ?||59 Yes||5 No|
Answer / sai
Two forgotten to bring their purse=8-2=6
|Is This Answer Correct ?||45 Yes||21 No|
Answer / aravind
|Is This Answer Correct ?||28 Yes||13 No|
Answer / dharani
2 person miss the purse
6 person will pay extra 100rs.
finally each of the 6 person will pay 400
total amount equal for given payable amount
ANSWER: 8 PERSON
|Is This Answer Correct ?||8 Yes||1 No|
Answer / sathya naren
Total bill 2400
Two members don't have money
Each member paying extra Rs.100
Because two members don't have purse
So,if each pays Rs.300+Rs.100 Except two of them mean
Total members are (8)
So,Total Members - 8
|Is This Answer Correct ?||7 Yes||0 No|
Answer / rajkumar
let the no.of persons=x
==> (x-8)=0 or (x+6)=0
finally either x=8 or -6
therefore the no.of persons = 8
|Is This Answer Correct ?||10 Yes||7 No|
Answer / divyansh the great
|Is This Answer Correct ?||3 Yes||1 No|
Answer / nitin r
suppose 8 person goes for dinner and gets bill of 2400
each person gets 300
two of them forgotten purse
extra contribution 100 of 6 person
hence ans is 8 person
|Is This Answer Correct ?||5 Yes||4 No|
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