Given: A library has an average of 265 visitors on Sundays and 130 visitors on other days. Formula used: Average
=(M1×N1+M2×N2)/(M1+M2)
Calculation: Since the month begins with a Monday, to there will be four Mondays in the month. M1 = Number of Sunday M1 = 4 M2 = Remaining days M2 = 26 N1 = Average visitors on Sundays N1 = 265 N2 = Average visitors on Sundays N2 = 130 Required average, ⇒(265x4+130x26)/30 ⇒4440/30 ⇒148 Therefore, The average number of visitors per day 148