The average height of a class of 18 students is 105 cm After arrival of 7 new students the average decrees by 5 cm. Find sum of height of all the students of the class.

Question

asked Jun 2, 2019 125k views

1 Answer

Santanu Karar · Answer 1 · 2019-06-06T01:30:10+0000

Total number of students = 18 + 7 = 25

Average height of the 25 students = 105 - 5 = 100 cm

Sum of height of all students = 100 x 25 = 2500cm

Answer: 2500cm