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.
Nov 1912:30 PM EST
-01:30 PM EST
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
Nov 2001:30 PM EST
-02:30 PM IST
Learn how Kamakshi achieved a GMAT 675 with an impressive 96th %ile in Data Insights. Discover the unique methods and exam strategies that helped her excel in DI along with other sections for a balanced and high score.
Nov 2211:00 AM IST
-01:00 PM IST
Do RC/MSR passages scare you? e-GMAT is conducting a masterclass to help you learn – Learn effective reading strategies Tackle difficult RC & MSR with confidence Excel in timed test environment- Nov 23
11:00 AM IST
-01:00 PM IST
Attend this free GMAT Algebra Webinar and learn how to master the most challenging Inequalities and Absolute Value problems with ease. 
Nov 2407:00 PM PST
-08:00 PM PST
Full-length FE mock with insightful analytics, weakness diagnosis, and video explanations!
Nov 2510:00 AM EST
-11:00 AM EST
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.
01 Jun 2022, 01:30
Kudos
Bookmarks
B
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:
40% (02:05) correct
60%
(01:43)
wrong
based on 146
sessions
History
Date
Time
Result
Not Attempted Yet
Mia is "helping" her mom pick up 30 toys that are strewn on the floor. Mia’s mom manages to put 3 toys into the toy box every 30 seconds, but each time immediately after those 30 seconds have elapsed, Mia takes 2 toys out of the box. How much time, in minutes, will it take Mia and her mom to put all 30 toys into the box for the first time?
(A) 13.5
(B) 14
(C) 14.5
(D) 15
(E) 15.5
Are You Up For the Challenge: 700 Level Questions
(A) 13.5
(B) 14
(C) 14.5
(D) 15
(E) 15.5
Are You Up For the Challenge: 700 Level Questions
01 Jun 2022, 02:20
Kudos
Bookmarks
We know that every 30 seconds Mia's mom puts 3 toys into the box, and immediately after that Mia takes 2 out. So every 30 seconds there is a growth of 1 more toy in the box.
As there are 30 toys we know that once the total number of toys in the box reaches 27, 30 seconds later the box will have all 30 toys.
Dividing 27 by 2 gives us the amount of minutes it will take to get to get to 27 toys as 30 seconds is half a minute: \(27÷2 = 13.5\)
It will take 13.5 minutes for there to be 27 toys in the box, and 30 seconds later there will be 30 toys in the box so in total it will take 14 minutes.
Answer B
As there are 30 toys we know that once the total number of toys in the box reaches 27, 30 seconds later the box will have all 30 toys.
Dividing 27 by 2 gives us the amount of minutes it will take to get to get to 27 toys as 30 seconds is half a minute: \(27÷2 = 13.5\)
It will take 13.5 minutes for there to be 27 toys in the box, and 30 seconds later there will be 30 toys in the box so in total it will take 14 minutes.
Answer B
01 Jun 2022, 02:01
Kudos
Bookmarks
Mia takes 2 toys out of the box immediately after 30 seconds in which Mia's mom puts 3 toys into the toybox.
at 30 seconds: 3 in toy box
Immediately after 30 seconds: 1 in toybox.
at 60 seconds: 4 in toy box
Immediately after 30 seconds: 2 in toybox.
...
at 30*n seconds (n=1,2,3...): 3+n-1 in toybox.
Now solve 3+n-1=30
n+2=30
n=28
So, it will take 14 minutes to put all 30 toys into the box for the first time.
The answer is (B).
It is a tricky question. I got it wrong the first time.
at 30 seconds: 3 in toy box
Immediately after 30 seconds: 1 in toybox.
at 60 seconds: 4 in toy box
Immediately after 30 seconds: 2 in toybox.
...
at 30*n seconds (n=1,2,3...): 3+n-1 in toybox.
Now solve 3+n-1=30
n+2=30
n=28
So, it will take 14 minutes to put all 30 toys into the box for the first time.
The answer is (B).
It is a tricky question. I got it wrong the first time.
