Math CentralQuandaries & Queries


Question from Abigail:

David Is 6 years older than his sister Delia. In 10 years the sum of There age 52. how old are David and Delia today

Hi Abigail,

In 10 years from today David will still be 6 years older than Delia. Thus, at that time Delia's age will be her age today plus 10 years and David's age will be Delia's age today plus 6 plus 10 years. The sum of their ages in 10 years is 52 years. What is Delia's age today?

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