the average height of students in section A and B is 172
the average height of students in sections B and C is 167cm
the average height of students in section A and C is 177,
the average height of all the students in the sections A,B and C can be

a) 168.5
b) 169.3
c) 173.9
d) 174.8

Question

the average height of students in section A and B is 172
the average height of students in sections B and C is 167cm
the average height of students in section A and C is 177,
the average height of all the students in the sections A,B and C can be

a) 168.5
b) 169.3
c) 173.9
d) 174.8

Kanchan Sawant · Answer

Add all 3
U will get (A+B+C):516
Divide this by 3 u get average as 172 the options are wrong 
Hope this helps

Shankaar Mahato · Answer

in this question some information are missing i think can you send me a photo of this question in mail (jayshankarmahato2004@gmail.com)

the average height of students in section A and B is 172 the average height of students in sections B and C is 167cm the average height of students in section A and C is 177, the average height of all the students in the sections A,B and C can be a) 168.5 b) 169.3 c) 173.9 d) 174.8

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