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Updated on: 17 Jul 2015, 09:24
Originally posted by jimmyjamesdonkey on 15 Apr 2008, 17:42.
Last edited by Bunuel on 17 Jul 2015, 09:24, edited 1 time in total.
Last edited by Bunuel on 17 Jul 2015, 09:24, edited 1 time in total.
Renamed the topic, edited the question and added the OA.
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D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
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Last year, a certain public transportation system sold an average (arithmetic mean) of 41,000 tickets per day on weekdays (Monday through Friday) and an average of 18,000 tickets per day on Saturday and Sunday. Which of the following is closest to the total number of tickets sold last year?
(A) 1 million
(B) 1.25 million
(C) 10 million
(D) 12.5 million
(E) 125 million
(A) 1 million
(B) 1.25 million
(C) 10 million
(D) 12.5 million
(E) 125 million
iruns0metimes
Joined: 09 Apr 2008
Last visit: 12 Feb 2013
Posts: 25
Concentration: Strategy, Operations
Schools: CBS '15 (A)
15 Apr 2008, 18:26
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With the answer choices provided, I would say it is safe to approximate in this manner...
41,000 x 5 + 18,000 x 2 = 241,000 (approx to 240,000)
52 weeks in a year (approx to 50)
Now, since 50 is much like .50 we have 12,000,000
Knowing that we lessened both values in our approximation, 12.5 million is apparent.
Hope this helps!
41,000 x 5 + 18,000 x 2 = 241,000 (approx to 240,000)
52 weeks in a year (approx to 50)
Now, since 50 is much like .50 we have 12,000,000
Knowing that we lessened both values in our approximation, 12.5 million is apparent.
Hope this helps!
Updated on: 18 Aug 2020, 12:35
Originally posted by BrentGMATPrepNow on 20 Apr 2018, 14:48.
Last edited by BrentGMATPrepNow on 18 Aug 2020, 12:35, edited 1 time in total.
Last edited by BrentGMATPrepNow on 18 Aug 2020, 12:35, edited 1 time in total.
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jimmyjamesdonkey
The word "closest" suggests that we can use some estimation here.
Let's first estimate the number of tickets sold PER WEEK
41,000 tickets per day on weekdays
(5)(41,000) = 205,000
18,000 tickets per day on weekends
(2)(18,000) = 36,000
So, total tickets sold PER WEEK = 205,000 + 36,000 = 241,000
To make our calculations easier, let's round it off to 240,000 tickets per week
There are 52 weeks in the years, so the TOTAL (annual) ticket sales is (52)(240,000)
HOWEVER, since the GMAT is not testing whether or not you are a human calculator, we can probably just say there are 50 weeks in a year.
(50)(240,000) = 12,000,000
Of course, there are actually 52 weeks in the year, so the correct answer is a BIT MORE than 12,000,000
Choose D
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