SOLUTION: A total age of a family of 4 is 68. 4 years ago, it was 53. How old is the youngest member of the family

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Question 990984: A total age of a family of 4 is 68. 4 years ago, it was 53. How old is the youngest member of the family
Answer by ikleyn(52786) About Me  (Show Source):
You can put this solution on YOUR website!
.
3 years old.

Notice that 68 - 53 = 15.

15 = 3*4 + 3.

Is it clear?