BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

An airplane displays trip information to passengers in two..

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Moderator
Posts: 2505
Joined: Sun Oct 15, 2017 1:50 pm
Followed by:6 members

An airplane displays trip information to passengers in two..

by BTGmoderatorLU » Tue Mar 06, 2018 1:57 pm
An airplane displays trip information to passengers in two way: how much time is left in the flight, and what percentage of the trip duration has been completed. When Curtis first checks the display, the clock reads 5:50, meaning that there are 5 hours and 50 minutes left for the trip, and the display shows that 12.5% of the trip has been completed. What will the clock show when the trip is 50% complete?

A. 2:00
B. 2:25
C. 2:45
D. 3:10
E. 3:20

The OA is E.

I'm confused by this PS question. Experts, any suggestion about how can I solve it? Thanks in advance.
Top
Source: — Problem Solving |
Senior | Next Rank: 100 Posts
Posts: 94
Joined: Tue Dec 16, 2014 9:50 am
Location: London, UK
Thanked: 2 times
Followed by:4 members
GMAT Score:770

by mbawisdom » Tue Mar 06, 2018 3:23 pm
LUANDATO wrote:An airplane displays trip information to passengers in two way: how much time is left in the flight, and what percentage of the trip duration has been completed. When Curtis first checks the display, the clock reads 5:50, meaning that there are 5 hours and 50 minutes left for the trip, and the display shows that 12.5% of the trip has been completed. What will the clock show when the trip is 50% complete?

A. 2:00
B. 2:25
C. 2:45
D. 3:10
E. 3:20

The OA is E.

I'm confused by this PS question. Experts, any suggestion about how can I solve it? Thanks in advance.
5hr and 50 min to go = 87.5% of the trip
350 min = 7/8 of the trip --> multiply both sides by 4/7 to get to 50%!
200 min = 4/8 trip = 1/2 trip = 50% of the trip --> make sure you convert back the minutes to hr/min format!
3hr 20 min = 50% of the trip
Top

GMAT/MBA Expert

User avatar
Elite Legendary Member
Posts: 10392
Joined: Sun Jun 23, 2013 6:38 pm
Location: Palo Alto, CA
Thanked: 2867 times
Followed by:511 members
GMAT Score:800

by [email protected] » Tue Mar 06, 2018 5:19 pm
Hi LUANDATO,

We're told that an airplane displays trip information to passengers in two way: how much time is left in the flight, and what percentage of the trip duration has been completed. When the clock reads 5:50, the display shows that 12.5% of the trip has been completed. We're asked for the time that the clock will show when the trip is 50% complete. We can use the Answer choices 'against' the prompt and TEST THE ANSWERS.

To start, knowing basic fraction-to-decimal conversions will save you some time on Test Day. Here, 12.5% is 1/8; the trip is 1/8 complete when 5:50 is left on the clock. This implies that the ENTIRE trip is certainly more than 6 hours in length (since there's no way that 10 minutes is 1/8 of the trip) and HALF the time would be greater than 3 hours. Thus, the correct answer must be either D or E.

Let's TEST Answer D) 3:10
IF HALF the trip would take 3:10, then....
the FULL trip would take 6:20

6:20 = 6 hours 20 minutes = 6(60) + 20 = 380 minutes
6:20 - 5:50 = 0:30 = 30 minutes
(380 minutes)(1/8) = over 40 minutes
These 2 values do NOT match one another, so this CANNOT be the answer. There's only one Answer left...

Final Answer: E

GMAT assassins aren't born, they're made,
Rich
Contact Rich at [email protected]
Image
Top
Post new topic Post Reply
• Page 1 of 1