1.

The average weight of 3 persons of group A is 60 kg, the average weight of 2 other persons of Group B is 70 kg, then find out the average weight of all persons.`1. 40 kg2. 54 kg3. 64 kg4. 70 kg

Answer» Correct Answer - Option 3 : 64 kg

GIven :

The average weight of 3 persons of group A is 60 kg 

The average weight of 2 persons of Group B is 70 kg 

Formula used :

Average = Total sum of all quantities/total number of quantities

Calculations :

Total weight of group A people = 60 × 3 = 180 kg 

Total weight of group B people = 70 × 2 = 140 kg 

⇒ Total weight = 140 + 180 = 320 kg 

⇒ Average weight of all persons = 320/5

⇒  64 kg 

∴ Average weight of all persons will be 64 kg  



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