Average wight of ALam, Babul and Kamal is 84/kg. When Dulal as a new member, joins the group , average weight of the group becomes 80 kg. If another man Einul whose weight is 3 kg more than that Dual, replaces Alam, then the average weight of the group becomes 79 kg What is the weight of Alam. (average)

Created: 1 year ago | Updated: 1 year ago

Updated: 1 year ago

Total weight of Alam, Babul and Kmal = $84 \times 3 = 252 . . . . . . . . . (i)$

Total weight of alam, Babul. Kmal and Dulal = $80 \times 4 = 320$

Dulal's weight= $320 - 352 = 68$

Einul weight= 68+3=71

Total weight (Babul + Kamal+ Dulal + Einul)= $79 \times 4 = 316$

Babul + Kamal +68+71=316

Babul + Kamal = 316-139=177…………(ii)

(i)-(ii) we have, weight of Alam= 252-177=75kg. ans.

1 year ago

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