![If the number of quantities in group A is 10 and in group B is 8, and their individual average is 24 and 16 respectively, find the combined average of the two groups.](https://www.gkseries.com/blog/wp-content/uploads/2023/07/If-the-number-of-quantities-in-group-A-is-10-and-in-group-B-is-8-and-their-individual-average-is-24-and-16-respectively-find-the-combined-average-of-the-two-groups.jpg)
Question | If the number of quantities in group A is 10 and in group B is 8, and their individual average is 24 and 16 respectively, find the combined average of the two groups. | |
Type | multiple_choice | |
Option | 20.44 | correct |
Option | 18.22 | incorrect |
Option | 16.22 | incorrect |
Option | 18.66 | incorrect |
The combined average of the two groups is =
![](https://www.gkseries.com/blog/wp-content/uploads/2023/07/image-171.png)
=(10*24+8*16)/(10+8)
= (240+128)/18
= 368/18
= 20.44