Question
There are three numbers 'u', 'v' and 'w' (u < v <
There are three numbers 'u', 'v' and 'w' (u < v <
w) such that 'v' is equal to the average of 'u' and 'w'. 80% of 'w' is equal to 'u' and the difference between 'v' and 'w' is 20. Find the sum of all three numbers.
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