Question

If the mean od 50 students is 40 & that of other 100 students is 50,then combined mean group of 150 is ​

Answer 1

Step-by-step explanation:

mean of 50 students=40

sum=50×40

=200

mean of other 100 student=50

sum=100×50

=5000

total student=50+100

=150

total sum=5000+200

=5200

combined mean=

5200/150

=34.6666......

Answer 2

let the score of 50 students is 'x'

formula of the mean is  $mean=\frac{total score }{students}$

$40=\frac{x}{50}$

$x=200$

let the score of the other 100 students is 'y'

$50=\frac{y}{100}$

$y=50\times 100$

$y=5000$

The mean of total 150 students will be

$mean=\frac{x+y}{150}$

⇒    $\frac{5000+200}{150}=34.66$

So the mean of 150 students is 34.66

Learn more about mean:

https://brainly.in/question/15027759

https://brainly.in/question/14313643

#SPJ3