The task is to generate the correct answer for a given math problem.
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Question: Problem: the mean daily profit made by a shopkeeper in a month of 30 days was rs . 350 . if the mean profit for the first fifteen days was rs . 255 , then the mean profit for the last 15 days would be

Answer: rs . 445


Question: Problem: by selling an article for $ 195 , a person gains $ 45 . what is the gain % ?

Answer: 30 %


Question: Problem: in one hour , a boat goes 19 km / hr along the stream and 9 km / hr against the stream . the speed of the boat in still water ( in km / hr ) is :

Answer:
14 kmph