The average weight of a class of 20 students is 40 kg. When a teacher replaces a student, the average weight increase by 2 kg. What is the weight of the teacher
Answers
Answered by
0
Answer:
80kg
Step-by-step explanation:
Average Weight=40kg
No. of students=20
Total weight=20×40
=800kg
Weight difference=+2kg
Therefore final weight=42×20
=840 Kg
Therefore the weight of the teacher=(840-800+40)kg
=80kg
Similar questions