two persons together weighed 398/3kg weight of one person is 197/3kg. what is the weight of the second person?
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Answer:
weight of second person= 201/3 kg
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Step-by-step explanation:
Let y be weight of new person
=>Let Average be X
=> (6X-80+y)/6 = X-3
=> 6X-80+y=6X-18
=> y= 80–18
=> y= 62
Or
y = 80–6*3 = 62 ( average is decreased by 3, that means decreased weight(3) is distributed equally among all the person -> 3*(total no of persons) —> 3*6= 18 to be decreased from weight of replaced person
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