urvashis09 wrote:
CounterSniper wrote:
Bunuel wrote:
A zoo sold admission tickets to groups of 30 people every 5 minutes from 9:00 in the morning to 5:55 in the afternoon, inclusive. What is the total number of tickets sold?
A) 3120
B) 3150
C) 3180
D) 3210
E) 3240
30 * (9 * 60/5) -30
30 * 108 -30
30 *107
3210
Corrected !!
Since 9 am in inclusive , 30 tickets are sold at 9 as well !!
so total = 3210 + 30
3240
Hi,
Can you please help understand what is meant by at 9 AM? The question states every 30 tickets are sold every five minutes "from" 9 AM. So how can it be AT 9 AM?
Hi,
The question says 9 am inclusive , we therefore have to take into account the number tickets sold at 9 am as well.
Assume the tickets started selling at
9:05 the next instance was at 9:10 followed by 9:15 .....10:00
total 12 such instances in an hour
now,
from 9 am to 6 pm we have 9 hours
total no of tickets sold = 12*9*30 =3240
but the last set of tickets were sold at 8:55
so the number of tickets sold till
8:55 is 3240-30 =3210 tickets.
coming back to the inclusive part of the question , 30 tickets were sold at 9 am
therefore
sum total = 3210+30=
3240.