Verbal Reasoning - Arithmetic Reasoning - Discussion
Discussion Forum : Arithmetic Reasoning - Section 1 (Q.No. 4)
4.
A number of friends 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 those who attended the picnic was
Answer: Option
Explanation:
Discussion:
49 comments Page 5 of 5.
Parth said:
1 decade ago
Very well @Neel....Shobha you can simply
80+4n -4 (96/n) = 96
4n - 4 (96/n) = 16.....divide by 1/4
Then as Neel explained (n+8)(n-12) = 96
80+4n -4 (96/n) = 96
4n - 4 (96/n) = 16.....divide by 1/4
Then as Neel explained (n+8)(n-12) = 96
Shobha said:
1 decade ago
Please explain clearly once again.
Neel said:
1 decade ago
Look 96..as we know 12*8=96, number of boys decrease by 4 burden increase by 4 each.
Just write (12-4)(8+4)=96 i.e. 8*12=96.
Hence who participated are.. 8.
Just write (12-4)(8+4)=96 i.e. 8*12=96.
Hence who participated are.. 8.
Harshita said:
1 decade ago
Sikander Kindly explain how it is possible.
4n*n-4*96-16n=0
n*n-4n-96=0
(n+8)(n-12)=0
n=12
n-4=8
4n*n-4*96-16n=0
n*n-4n-96=0
(n+8)(n-12)=0
n=12
n-4=8
Parthiban said:
1 decade ago
Please explain clearly I didn't understand.
Sonia said:
1 decade ago
@Sikandra. Very well explaned. Thanks so much.
Sikandra said:
1 decade ago
n=total no. of students.
r=rs. per student.
nr=96 i.e. r = 96/n
each students have to play 4rs. extra because 4 students did not turn up so:
(n-4)(r+4)=96
nr+4n-4r-16=96
n(96/n)+4n-4(96/n)-16=96
96+4n-4*96/n-16=96
4n*n-4*96-16n=0
n*n-4n-96=0
(n+8)(n-12)=0
n=12
n-4=8
r=rs. per student.
nr=96 i.e. r = 96/n
each students have to play 4rs. extra because 4 students did not turn up so:
(n-4)(r+4)=96
nr+4n-4r-16=96
n(96/n)+4n-4(96/n)-16=96
96+4n-4*96/n-16=96
4n*n-4*96-16n=0
n*n-4n-96=0
(n+8)(n-12)=0
n=12
n-4=8
(2)
Shaher said:
1 decade ago
Please explain each step clearly.
Nayaki said:
1 decade ago
Please explain clearly the logic any one.
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