the mean score in a test of the 10 boys...
hey dear ❤️ Explain answer.. how it come..?
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Nitin00777:
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answer is.........
let as assume 10 boys are b1,b2,b3,........b10
given total students in a class=25
let as assume girls strength in a class is x
given boys strength =10
girls strength=total strength-boys strength
girls strength=25-10
=15
b1+b2+b3+.........+b10/10=15
b1+b2+......+b10=150 ..................(1)
b1+b2+......+b10+g1+g2+....+g15/25=16.2
from (1)
150+g1+g2+.......g(15)=405
g1+g2.....+g15=255.............(2)
so mean of girls score =255/15
=17
HOPE U UNDERSTAND MY ANSWER ☺☺☺☺
let as assume 10 boys are b1,b2,b3,........b10
given total students in a class=25
let as assume girls strength in a class is x
given boys strength =10
girls strength=total strength-boys strength
girls strength=25-10
=15
b1+b2+b3+.........+b10/10=15
b1+b2+......+b10=150 ..................(1)
b1+b2+......+b10+g1+g2+....+g15/25=16.2
from (1)
150+g1+g2+.......g(15)=405
g1+g2.....+g15=255.............(2)
so mean of girls score =255/15
=17
HOPE U UNDERSTAND MY ANSWER ☺☺☺☺
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if u wanna talk 2 me then u should accept me as ur sister
both r on same way
otherwise say good bye brother
no i dont say u sis
bye
only gf
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