Answer-In a class of ‘x’ students, if a new student weighing 32 kg joins the class, then the av...

Number of students in the class is x. Let the Average weight of the class be y. Total weight of the class xy If one student 32 kg joins, comparing total weight of the class, xy32x1 y1 x y 31 ------- i If one student 16 kg joins, comparing total weight of the class, xy 16x1 y-1 -x y 17 -------- ii Solving the equations i amp ii we get, x 7 Therefore the total number of students in a class is 7.

Question

In a class of ‘x’ students, if a new student

weighing 32 kg joins the class, then the average weight of the class increases by 1 kg. If the new student’s weight is 16 kg, then the average weight of the class decreases by 1 kg. Find ‘x’?

A 6

B 7

C 5

D 8

E 9

Practice Next

Relevant for Exams:

AIC MT & HO

AIC MT

In a class of &lsquo;x&rsquo; students, if a new student

Solution

Relevant for Exams:

In a class of ‘x’ students, if a new student