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.
Apr 2512:30 AM EDT
-01:30 AM EDT
At one point, she believed GMAT wasn’t for her. After scoring 595, self-doubt crept in and she questioned her potential. But instead of quitting, she made the right strategic changes. The result? A remarkable comeback to 695. Check out how Saakshi did it.
Apr 2610:00 AM EDT
-11:00 AM EDT
The Target Test Prep course represents a quantum leap forward in GMAT preparation, a radical reinterpretation of the way that students should study. Try before you buy with a 5-day, full-access trial of the course for FREE!
Apr 2711:00 AM EDT
-12:00 PM EDT
Prefer video-based learning? The Target Test Prep OnDemand course is a one-of-a-kind video masterclass featuring 400 hours of lecture-style teaching by Scott Woodbury-Stewart, founder of Target Test Prep and one of the most accomplished GMAT instructors
Apr 2808:00 AM PDT
-11:00 AM PDT
Whether you are just beginning your MBA journey or fine-tuning your path to a 700+ score, GMAT Day is designed to give you a competitive edge.
22 Apr 2020, 05:42
Kudos
Bookmarks
E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
85%
(hard)
Question Stats:
51% (02:37) correct
49%
(02:54)
wrong
based on 128
sessions
History
Date
Time
Result
Not Attempted Yet
Pipe A fills a tank at the rate of 100lit/min, Pipe B fills a tank at the rate of 25 lit/min, and pipe C drains a tank at the rate of 50 lit/min. First pipe B is opened for 1 minute and then closed, after that pipe C is opened for 1 minute and then closed, after that pipe A is opened for 1 minute and then closed. If this continues till a 7000-litre empty tank is filled to the capacity, how long will it take to fill the tank ?
A. 276 minutes
B. 277 minutes
C. 278 minutes
D. 279 minutes
E. 280 minutes
Are You Up For the Challenge: 700 Level Questions
A. 276 minutes
B. 277 minutes
C. 278 minutes
D. 279 minutes
E. 280 minutes
Are You Up For the Challenge: 700 Level Questions
yashikaaggarwal
Senior Moderator - Masters Forum
Joined: 19 Jan 2020
Last visit: 29 Mar 2026
Posts: 3,089
Own Kudos:
Given Kudos: 1,510
Location: India
Schools: Cranfield (A) Warwick MiM "23 (M)
GPA: 4
WE:Analyst (Internet and New Media)
Updated on: 25 Apr 2020, 07:27
Originally posted by yashikaaggarwal on 22 Apr 2020, 05:58.
Last edited by yashikaaggarwal on 25 Apr 2020, 07:27, edited 1 time in total.
Last edited by yashikaaggarwal on 25 Apr 2020, 07:27, edited 1 time in total.
Kudos
Bookmarks
Answer should be 279 minutes.
First B pipe is opened for 1 min filling 25 litre
Then C pipe is opened for 1 min draining 25 litre ( since only 25 litre was present in starting)
The Pipe A is opened for 1 min and it filled 100.
Repeating the process will lead to (100+25-50+100)=175 litres.
That MEANS from the second time onwards pipes will fill 75 litre in 3 min.
25 litre in 1 min.
So 6900 litre tank (7000-100 as 100 is already filled in first attempt) will be filled in 6900/25= 276 + 3 minutes from the initial process. = 279
Answer is supposedly D
Posted from my mobile device
First B pipe is opened for 1 min filling 25 litre
Then C pipe is opened for 1 min draining 25 litre ( since only 25 litre was present in starting)
The Pipe A is opened for 1 min and it filled 100.
Repeating the process will lead to (100+25-50+100)=175 litres.
That MEANS from the second time onwards pipes will fill 75 litre in 3 min.
25 litre in 1 min.
So 6900 litre tank (7000-100 as 100 is already filled in first attempt) will be filled in 6900/25= 276 + 3 minutes from the initial process. = 279
Answer is supposedly D
Posted from my mobile device
25 Apr 2020, 05:19
Kudos
Bookmarks
yashikaaggarwal
hi, yashikaaggarwal
why didn't you add the first 3 minutes (from the first attempt as you said above ) to 276 ?
Shouldn't it be 276+3 = 279 minutes ?
