Question

On a container ship there were 30 small containers that each weighed 3 tons, 20 medium containers that each weighed 7 tons, and 10 large containers that each weighed 8 tons.
Find the mean weight of the containers on this ship.

Answer 1

Answer:

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Answer 2

The Mean weight is 155 tons.

Explanation:

Mean= $\frac{Total observation}{Total no of observation}$

hence,

total weights= (30*3)+(20*7)+(10*8)

                  =90+140+80

                    =310

Total containers are : 3+7+10

                                 : 20

Hence, mean=   $\frac{310}{20}$  

                      =155