Question 5
A manager who works in a retail shop often records number of customers purchased item(s) on weekdays and he showed the following sample record. Monday: $x+3$; Tuesday: $5x+2$; Wednesday: $3x+2$; Thursday: $4x+9$; Friday: $7x+4$. It is known that the mean number of customers purchased item(s) is 16. Find the sum of minimum, median and maximum number of customers.
