Aleeka is now 12 years old and Raveena is 24 years old. How many years ago was Raveena three times as old as Aleeka?

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Solution

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$L e t x y e a r s a g o R a v e e n a b e 3 t i m e s a s o l d a s A l e e k a, t h e n 3 \times (12 - x) = (24 - x) 36 - 3 x = 24 - x 36 - 24 = - x + 3 x 2 x = 12 x = 6 H e n c e, 6 y e a r s a g o R a v i n a w a s t h r e e t i m e s a s o l d a s A l e e k a .$

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