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1. The average age of a group of 10 students was 20. The average age increased by 2 years when two new students joined the group. What is the average age of the group. What is the average age of the two new students who joined the group?

  • A. 22 years
  • B. 22 years
  • C. 22 years
  • D. 22 years

Answer: Option D

Explanation:

Total age of 10 students  = 20×10 = 200 
Total age of 12students  = (20  +  2)12 = 264
∴ age of 2 new students  = 264 - 200 = 64
average  = 64/2 = 32 

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