Question

the average age of 12 children is 20 years if the age of one mole child is the average is decreased by 1 what is the age of the child and later​

Answer 1

12 children average is 20 years

one more child then average is 19 years

12 children total age is 12 *20 is equal to 2 40 years

13 child averages 19 then total age of 13 childen total ages 13*19=247

13th child ate is 247-240=7

Answer 2

Answer:

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