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Average Part 3rd Replacement Case Special Question (in Hindi)
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Average related important question related to replacement case

Unacademy user
Sardar vallabh bhai patel who is also known as Iron man of india was quite mediocre in his school studies.He finished his high school in at 22. Everyone used to think he is well for common job. He proved evryone wrong by pasing state law exam with only help of books borrowed by his friends and manage to go england for studies and aced barrister law exam .
  1. The average weight of 8 persons is increased by 2.5 kg when one of them who weighs 56 kg is replaced by a new man. The weight of the new man is (1) 73 kg (3) 75 kg (5) None of these (2) 72 kg (4) 80 kg

  2. Replace ment ype * (iiven - No.ofNumbev's NoX Avg Wes- 56+(8x2.5) New 56 20

  3. Replacement pe liven

  4. The average weight of 8 people increases by 1.5 kg. if a man whose weight is 65kgs is replaced by another man. What is the weight of the new man? (1) 77 kgs (3) 75 kgs (5) None of these (2) 73 kgs (4) 74 kgs

  5. Neus old - CNox Avy Dec

  6. The average age of 8 members of a group is 40 years. Among them the age of 1 member is 55 yrs. After his retirement a new member whose age is 39 years comes in his place . What is the effect on the average age of group? (1) 2 years (3) 3 years (5) None of these (2) 0 years (4) 5 years

  7. 39-55 (NAvg.dec) 2.