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18-12-2020
Mathematics

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The average age of three children in the Smith family is 11. If the first two children are 14 and 12, how old is the youngest child?

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18-12-2020

Answer: 7

Step-by-step explanation:

If the average is 11

the number has to add up to 33 which is divisible by 3 and give you the average 11

14+12= 26

14+12=26/2=13

13- 6= 7

14+ 12 + 7= 33/3= 11

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