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deplorablesrus
deplorablesrus deplorablesrus
  • 19-02-2017
  • Mathematics
Answered

If I had 30 students in a class and the average age was 20.9 and I added twins and the average age changes to 21.6 years old, how old are the twins?

Verified Answer :

chatterbox1a1a chatterbox1a1a
  • 19-02-2017

20.9 times 20 plus 29 times 2 equals 476. Divide that by 22 and it equals about 21.6. Thus the twins are 29 years old

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