Events & Promotions
|
|
GMAT Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customized
for You
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Sep 2312:30 AM EDT
-01:30 AM EDT
Learn how Keshav, a Chartered Accountant, scored an impressive 705 on GMAT in just 30 days with GMATWhiz's expert guidance. In this video, he shares preparation tips and strategies that worked for him, including the mock, time management, and more
Sep 2401:30 AM EDT
-01:30 AM EDT
Tejas studied hard but kept repeating the same mistakes. After 3 attempts at 645, a focused 4-week strategy helped him identify and fix what was holding him back—leading to a 695 with just 12–15 hours of study per week.
Sep 2606:00 PM PDT
-07:00 PM PDT
Free- full-length test + 15 concept videos + 150+ short videos + study plan!
09 Jan 2020, 02:21
Kudos
Bookmarks
C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
95%
(hard)
Question Stats:
54% (03:30) correct
46%
(03:43)
wrong
based on 97
sessions
History
Date
Time
Result
Not Attempted Yet
On a 20 km tunnel connecting two cities A and B there are three gutters. The distance between gutter 1 and 2 is half the distance between gutter 2 and 3. The distance from city A to its nearest gutter, gutter 1 is equal to the distance of city B from gutter 3. On a particular day the hospital in city A receives information that an accident has happened at the third gutter. The victim can be saved only if an operation is started within 40 minutes. An ambulance started from city A at 30 km/hr and crossed the first gutter after 5 minutes. If the driver had doubled the speed after that, what is the maximum amount of time the doctor would get to attend the patient at the hospital? Assume 1 minute is elapsed for taking the patient into and out of the ambulance.
(A) 4 minutes
(B) 2.5 minutes
(C) 1.5 minutes
(D) 1 minute
(E) Patient died before reaching the hospital
(A) 4 minutes
(B) 2.5 minutes
(C) 1.5 minutes
(D) 1 minute
(E) Patient died before reaching the hospital
09 Jan 2020, 03:59
Kudos
Bookmarks
Bunuel
Explanation:
let that the distance of the gutter 1 and A to be x
The gutter 1 and 2 to be y
From the question, we will get that
x+y+2y+x = 20
2x + 3y = 20.
Since we know that the speed x is 30 km/hr and so x = 30*5/60 = 2.5 km ; correspondingly the value of y will be 5km.
Now we know that the ambulance doubles its speed to 60km/hr or we can write 1 km per minute. So the time taken for the remaining journey = 15*2 + 2.5 = 32.5.
Since, it takes 1 min to load and unload the patient so total time will be = 5 + 32.5 + 1 = 38.5 minutes.
So, doctor gets = 40 - 38.5 = 1.5 min to attend the patient.
IMO-C or D
