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  Number & Math Play

Six Daughters
 
Q Mr. Seibold has 6 daughters. Each daughter is 4 years older than her next younger sister. The oldest daughter is 3 times as old than her youngest sister.

How old is each of the daughters?


 
A From youngest to oldest, the 6 daughters are 10, 14, 18, 22, 26, and 30.

Source: Inspired by a puzzle in Put on Your Thinking Cap, Helen Jill Fletcher. New York: Abelard-Schuman, 1968.