Question

A rank fourth in a class.B ranks ninth from the last,if c is ninth after a and just in the middleof a and b , how many studentsare there in the class

Answer 1

Answer:

38

Step-by-step explanation:

A's rank= 4

Let no. of students be x

now,

for example,

There are four students. I am 3rd from last. Then, I am (4-3+1) from front i.e. 2nd

Similarly,

B's rank from front= (x-9+1)

and, C's rank= (4+9)=13

A.T.P.

all ranks from front,

=(B's rank - A's rank)/2 = C's rank

=(x-9+1-4)/2=13

=x-12=26

=x=38

Answer 2

There are 30 students in class

Solution:

Given that,

A ranks 4th in class

Therefore, before A, there are 3 ranks

Also, given that,

B ranks ninth from last

Therefore, after B, there are 8 ranks

Also given that,

C is ninth after A and just in the middle of A and B

Therefore, we can represent as:

1 2 3 A 1 2 3 4 5 6 7 8 C 1 2 3 4 5 6 7 8 B 1 2 3 4 5 6 7 8

Therefore,

Total students = 3 + 1 + 8 + 1 + 8 + 1 + 8 = 30

Thus there are 30 students in class

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