Q.

Find the average weight of four containers, if it is known that the weight of the first container is 100 kg and the total of the second, third and fourth containers' weight is defined by fx=x2-34x2 where x=100.

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a

650 kg 

b

900 kg

c

450 kg

d

750 kg 

answer is A.

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Detailed Solution

Given that the weight of the first container is 100 kg.

The total of the second, third, and fourth containers weight defined by fx=x2-34x2, where x=100.

Suppose that the average of four containers is A

A=100+1002-3410024 =100+25004 =26004 =650 kg

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