Question

Find the combined mean of a group of 150 if the mean of 50 students is 40 and of 100 students is 50

Answer 1

140/3

Step-by-step explanation:

combined mean = (50*40 + 100*50)/150

= (2000+5000)/150

=7000/150

=140/3

Answer 2

The combined mean of a group of 150 is 46.67.

Step-by-step explanation:

Since we have given that

Mean of 50 students = 40

Mean of 100 students = 50

We need to find the combined mean of a group of 150.

So, the combined mean would be

$\dfrac{50\times 40+100\times 50}{150}\\\\=\dfrac{2000+5000}{150}\\\\=\dfrac{7000}{150}\\\\=46.67$

Hence, the combined mean of a group of 150 is 46.67.

# learn more:

Find the combine mean of a group of 150 . If the mean

of 50 students is 40 & that of other 100 students is 50​

https://brainly.in/question/13660393