Question

The average weight of the 5 officers of a regiment is 42 kg. If a senior officer was replaced by a new officer and thus the average increased by 500 Gm, the weight of the new officer is :​

Answer 1

Answer:

44.5

Step-by-step explanation:

42*5 = 210

42.5*5= 212.5

(212.5-210)+42 = 44.5

Answer 2

The weight of new officer cannot be determined

Solution:

The average is given as:

$Average = \frac{\text{sum of all officers weight}}{\text{total number of officers}}$

Given that,

The average weight of the 5 officers of a regiment is 42 kg

Therefore,

$42 = \frac{sum\ of\ 5\ officers\ weight}{5}\\\\sum\ of\ 5\ officers\ weight = 210$

If a senior officer was replaced by a new officer and thus the average increased by 500 gm

But the senior officer weight( replaced officer) is not given

Therefore, weight of the new officer cannot be determined

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