Question
At a farm, there were 15 as many chickens and cows. There were 56 more cows than chickens. The farmer sold away some cows. In the end, there were 25  as many chickens as cows. How many cows were sold away?
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At a farm, there were 15 as many chickens and cows. There were 56 more cows than chickens. The farmer sold away some cows. In the end, there were 25  as many chickens as cows. How many cows were sold away?