Question

In a class the average weight of 32 students is 48.5 kg. 10 new students Join the class and hence the average
weight of all the students increase by 7.5 kg. Find the average weight of 10 new students ?​

Answer 1

Answer:

80

Step-by-step explanation:

sum age of 32 students =32× average weight of 32 students= 1552.

average age Increase after 10 students is 7.5

total average age of 42 students is 56.

(sum age of 32 students + sum age of 10 students)÷42. = 56

56×42-1552=sum age of 10 students

sum age of 10 students=800

then

average weight of 10 students =(800)÷10=80