In a retail store, the average (arithmetic mean) sale for month M was d dollars. Was the average (arithmetic mean) sale for month J at least 20 percent higher than that for month M?
(1) For month M, total revenue from sales was $3,500.
(2) For month J, total revenue from sales was $6,000.
In the solution, it is mentioned that
Quote:
This statement provides no information as to the number of sales so there is no way to determine the size of average scale.
My confusion is whether the fact that no of days of a month can be 28 or 30 or 31 is the main culprit or any other reason is present because of which we are not able to solve the problem.
Hi, that is not the reason. The question isn't talking about average daily sales, but about average sale amount. For example, there can be more than 1 sale per day, it could be that they had 100 sales in Month M and 1 sale in month J or vice versa. So the number of days per month is not the reason for answer E, its the number of sales that we need to know.