SajjadAhmad
A comedian is playing two shows at a certain comedy club, and twice as many tickets have been issued for the evening show as for the afternoon show. Of the total number of tickets issued for both shows, what percentage has been sold?
(1) A total of 450 tickets have been issued for both shows.
(2) Exactly 3/5 of the tickets issued for the afternoon show have been sold, and 1/5 exactly of the tickets issued for the evening show have been sold
Dear
SajjadAhmad,
I'm happy to respond.
This question makes the somewhat arcane distinction between "tickets issued" and "tickets sold," but at least they are consistent with terminology through the question.
We need to know both the total number of tickets issued, and the percent sold of those issued. The individual statements are clearly
not sufficient and are very easy to eliminate.
Put the statements together.
450 tickets issued
"
twice as many tickets have been issued for the evening show as for the afternoon show"
This means
150 issued for the afternoon show
300 issued for the evening show
"
Exactly 3/5 of the tickets issued for the afternoon show have been sold"
(3/5)(150) = 90 sold for the afternoon show
1/5 exactly of the tickets issued for the evening show have been sold(1/5)(300) = 60 sold for the evening show
A total of 90 + 60 = 150 tickets have been sold. Now, we just want to know, 150 is what percent of 450? We don't need to perform the calculation. It's enough to realize that we have all the information we need. Together, the statements are
sufficient.
This book review might be germane:
Princeton Review GMAT Book Review: Cracking the GMAT 2017Does all this make sense?
Mike

1) 450 is issued but no info for sold tickets.
......So answer is always 33.3% regardless of the number of tickets issued.
Therefore, statement 2 is sufficient to answer the question.