Question
On 1 May to 4 May, an average of 47 puffs were sold and from 5th May to 9 May, an average of 22 puffs were sold. $328 worth of puffs were sold from 10 May to 20 May. Given that a puff was sold for $4, find the average number of puffs sold from 1 May to 20 May.
4 m

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On 1 May to 4 May, an average of 47 puffs were sold and from 5th May to 9 May, an average of 22 puffs were sold. $328 worth of puffs were sold from 10 May to 20 May. Given that a puff was sold for $4, find the average number of puffs sold from 1 May to 20 May.