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
positive.
So, x = 8.
Is This Answer Correct ? | 309 Yes | 14 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 ? | 66 Yes | 6 No |
Answer / sai
8 PERSONS
Two forgotten to bring their purse=8-2=6
6*300=1800
6*100=600
Total=1800+600=2400
Is This Answer Correct ? | 51 Yes | 22 No |
Answer / dharani
2400/n
assume n=8
2400/8 =300
2 person miss the purse
then 8-2=6
6 person will pay extra 100rs.
finally each of the 6 person will pay 400
6*400
2400
total amount equal for given payable amount
ANSWER: 8 PERSON
Is This Answer Correct ? | 10 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)
1st-300+100=400
2nd-300+100=400
3rd-300+100=400
4th-300+100=400
5th-300+100=400
6th-300+100=400
7th-Nil
8th-Nil
Total=2400
So,Total Members - 8
Is This Answer Correct ? | 8 Yes | 0 No |
Answer / rajkumar
let the no.of persons=x
then
100(x-2)+(x-2)*2400/x=2400
100x-200x+(2400x-4800)/x=2400
.
.
.
.
==> (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 / nitin r
suppose 8 person goes for dinner and gets bill of 2400
each person gets 300
8*300=2400
two of them forgotten purse
then
8-2=6
6*300=1800
extra contribution 100 of 6 person
6*100=600
1800+600=2400
hence ans is 8 person
Is This Answer Correct ? | 5 Yes | 4 No |
The age of the grand father is the sum of his three grandsons.The second is 2 year younger than first one and the third one is 2 year younger than the second one. Then what will be the age of the grandfather?
A square plot of some size , at four corners equal squares of some size are cut and is formed as open box. If this open box carries 128ml of oil. What is the size of the plate i.e. side a.17 b.14 c.13 d.none
solution of system of equations y-z=0,x+8y=4,3x+4y=7z is
A ship went on a voyage after 180 miles a plane statrted with 10 times speed that of the ship. Find the distance when they meet from starting point.
Rearrange BBIRAT
A man told that " day before yesterday i was 22, next year on my birthday i will be 25". Find out my birthday date?
In a certain code, ?BELIEF? is written as ?AFKKDI?. How is ?SELDOM? written in that code ? (A) RDKCNL (B) TFKENP (C) RFKENM (D) RFKFNP (E) None of these
If all the natural numbers from 256 to 400 are written side by side to each other, a large natural number is obtained. How many times 6 appears in this large natural number?
0.23 + 0.02323 + 0.002323.... == ???
In 1978, a kg of paper was sold at Rs25/. If the paper rate increases at 1.5% more than the inflation rate which is 6.5% a year, then what will be the cost of a kg of paper after 2 years?
Give me some Aptitude test questions and answers asked in I.T field interviews?
1 Answers Randstad, SanDisk, TCS,
A small town's industries have a total turnover of Rs. 25,00,000. If the town council plans to raise Rs.170,000 through octroi levy, what % levy should it charge on the industries?