A particular printer can print 96 pages in 25 minutes. How many minutes does it take 2 such printers to print 48 pages?
A. 6 minutes and 15 seconds
B. 12 minutes and 30 seconds
C. 25 minutes
D. 50 minutes
E. 100 minutes
The OA is A.
Why is A? It should be D. Shouldn't it? Experts, I really appreciate some help here.
5-Day Free Trial
5-day free, full-access trial TTP
Available with Beat the GMAT members only code
MORE DETAILS
A particular printer can print 96 pages
This topic has expert replies
-
regor60
- Master | Next Rank: 500 Posts
- Posts: 415
- Joined: Thu Oct 15, 2009 11:52 am
- Thanked: 27 times
Break the question into two parts to simplify what's going on.VJesus12 wrote:A particular printer can print 96 pages in 25 minutes. How many minutes does it take 2 such printers to print 48 pages?
A. 6 minutes and 15 seconds
B. 12 minutes and 30 seconds
C. 25 minutes
D. 50 minutes
E. 100 minutes
The OA is A.
Why is A? It should be D. Shouldn't it? Experts, I really appreciate some help here.
If 1 printer can print 96 pages in 25 minutes, how long would it take 2 printers to print 96 pages ? Half as long, right ? Which is 12.5 minutes.
So, you've captured the effect of adding another printer assuming 96 pages are being printed. Now, the question is saying the new number of pages is 48, which is half the original amount. Makes sense that it would take half the time.
So, 1/2 x 12.5 min = 6.25 min captures the impact of doubling the number of printers and halving the number of pages
GMAT/MBA Expert
-
[email protected]
- 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
Hi VJesus12,
Sometimes these types of rate questions can be complex, but this one is actually pretty straight-forward. It might help to think of the 'math steps' one at a time though (instead of trying to use all of the information all at once.
To start, we're told that particular printer can print 96 pages in 25 minutes. This is our 'baseline rate.' If we double the number of pages, then we would double the amount of time that it would take the printer. If we halve the number of pages, then we would halve the amount of time needed. If we double the number of printers, then we halve the amount of time needed.
The questions asks for the number of minutes that it would take 2 such printers to print 48 pages.
48 pages is HALF of 96 pages, so 1 printer would need HALF of 25 minutes = 12.5 minutes to complete the print job. We have 2 printers though, so since we're doubling the number of printers to do the same amount of work, we would halve the amount of time needed:
12.5/2 = 6.25 minutes = 6 minutes 15 seconds
Final Answer: A
GMAT assassins aren't born, they're made,
Rich
Sometimes these types of rate questions can be complex, but this one is actually pretty straight-forward. It might help to think of the 'math steps' one at a time though (instead of trying to use all of the information all at once.
To start, we're told that particular printer can print 96 pages in 25 minutes. This is our 'baseline rate.' If we double the number of pages, then we would double the amount of time that it would take the printer. If we halve the number of pages, then we would halve the amount of time needed. If we double the number of printers, then we halve the amount of time needed.
The questions asks for the number of minutes that it would take 2 such printers to print 48 pages.
48 pages is HALF of 96 pages, so 1 printer would need HALF of 25 minutes = 12.5 minutes to complete the print job. We have 2 printers though, so since we're doubling the number of printers to do the same amount of work, we would halve the amount of time needed:
12.5/2 = 6.25 minutes = 6 minutes 15 seconds
Final Answer: A
GMAT assassins aren't born, they're made,
Rich
-
EconomistGMATTutor
- GMAT Instructor
- Posts: 555
- Joined: Wed Oct 04, 2017 4:18 pm
- Thanked: 180 times
- Followed by:12 members
Hi VJesus12,A particular printer can print 96 pages in 25 minutes. How many minutes does it take 2 such printers to print 48 pages?
A. 6 minutes and 15 seconds
B. 12 minutes and 30 seconds
C. 25 minutes
D. 50 minutes
E. 100 minutes
The OA is A.
Why is A? It should be D. Shouldn't it? Experts, I really appreciate some help here.
Let's take a look at your question.
The question states,
A particular printer can print 96 pages in 25 minutes.
Since, 48 pages are half the 96 pages, therefore, the printer will take half the time to print half the pages.
It means, the printer will take 25/2 = 12.5 minutes to print 48 pages.
How many minutes does it take 2 such printers to print 48 pages?
One printer takes 12.5 minutes to print 48 pages.
2 printers will take half the time,
i.e. 12.5/2 = 6.25 minutes
= 6 minutes + 0.25 minutes
Lets convert 0.25 minutes into seconds
= 6 minutes + (0.25)(60) seconds
= 6 minutes and 15 seconds
Therefore Option A is correct.
I am available, if you'd like any follow up.
GMAT Prep From The Economist
We offer 70+ point score improvement money back guarantee.
Our average student improves 98 points.
We offer 70+ point score improvement money back guarantee.
Our average student improves 98 points.
GMAT/MBA Expert
-
Scott@TargetTestPrep
- GMAT Instructor
- Posts: 7241
- Joined: Sat Apr 25, 2015 10:56 am
- Location: Los Angeles, CA
- Thanked: 43 times
- Followed by:29 members
The rate of 1 printer is 96/25, so the rate of two printers is 2 x 96/25 = 192/25.VJesus12 wrote:A particular printer can print 96 pages in 25 minutes. How many minutes does it take 2 such printers to print 48 pages?
A. 6 minutes and 15 seconds
B. 12 minutes and 30 seconds
C. 25 minutes
D. 50 minutes
E. 100 minutes
Thus, it will take 2 printers 48/(192/25) = (48 x 25)/192 = 25/4 = 6 ¼ minutes = 6 minutes 15 seconds to complete the job.
Answer: A
Scott Woodbury-Stewart
Founder and CEO
[email protected]
See why Target Test Prep is rated 5 out of 5 stars on BEAT the GMAT. Read our reviews
