faisal223msk faisal223msk

18-09-2021
Mathematics

contestada

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

Respuesta :

Andrew239 Andrew239

18-09-2021

Step-by-step explanation:

18+7=105-5

25/25=100/25

4

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