Question
The sum of Zoe's age and Xandra's age is 30. Zoe is older than Xandra. The product of their ages is 144. What is Xandra's age in 7 years' time?
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The sum of Zoe's age and Xandra's age is 30. Zoe is older than Xandra. The product of their ages is 144. What is Xandra's age in 7 years' time?