Advertisement
Question
The average number of visitors at a zoo on a Monday is 96, whereas it is 156 on other days of the week. What will be the average number of visitors in a 30-day month that begins on a Monday?
A
146.
B
147.
C
145.
D
144.
Soln.
Ans: a
Ans: a
The month begins on a Monday, so there will be 5 Mondays. The average = ${5 × 96 + 25 × 156}/30$, which equals ${480 + 3900}/30$ = 146.