The mean weight of 4 children is 29kg . The fire three weigh, 29kg,30kg and 28kg. What's the weight of the fourth child?
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1
the weight of the 4th children will be 29
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3
fourth child weight is
==(29*4)-(29+30+28)
==116-87
==29
==(29*4)-(29+30+28)
==116-87
==29
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