Question

When a student weighing 45 kgs left a class, the average weight of the remaining 59 students increased by 200g. What is the average weight of the remaining 59 students

Answer 1

Answer:

average weight of the remaining 59 students = 57

Step-by-step explanation:

Let the average weight of the 59 students be A.

So the total weight of the 59 of them will be 59*A.

The questions states that when the weight of this student who left is added, the total weight of the class = 59A + 45

When this student is also included, the average weight decreases by 0.2 kgs

59A+4560=A−0.2

=> 59A + 45 = 60A - 12

=> 45 + 12 = 60A - 59A

=> A = 57