At the optician, I saw several spectacles for sale. The prices of the frames, still without the glasses, showed a very clear pattern.
What is the price of the one labelled with the question marks?
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Here is another age problem:
On a question about her age, Alice replied:
Me, I’m very old. I’m even older than my sis Barbara and I were together 7 years ago. And though Barbara is just two years younger than I am, she is still very young: she even isnt as old as we were together seven years ago!
What is the age of the girls?
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