GMAT Question of the Day - Daily to your Mailbox; hard ones only

 It is currently 18 Sep 2019, 10:58

### 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

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# A computer can perform 1,000,000 calculations per second. At this rate

Author Message
TAGS:

### Hide Tags

Director
Joined: 10 Oct 2005
Posts: 611
A computer can perform 1,000,000 calculations per second. At this rate  [#permalink]

### Show Tags

Updated on: 09 Jun 2015, 14:50
1
13
00:00

Difficulty:

45% (medium)

Question Stats:

66% (01:35) correct 34% (01:48) wrong based on 268 sessions

### HideShow timer Statistics

A computer can perform 1,000,000 calculations per second. At this rate, how many hours will it take this computer to perform the 3.6*10^11 calculations required to solve a certain problem?

A. 60
B. 100
C. 600
D. 1,000
E. 6,000

_________________
IE IMBA 2010

Originally posted by Yurik79 on 19 Jun 2006, 10:24.
Last edited by Bunuel on 09 Jun 2015, 14:50, edited 1 time in total.
Renamed the topic, edited the question and added the OA.
Manager
Joined: 30 Aug 2009
Posts: 249
Location: India
Concentration: General Management
Re: 600-700 Ps Problem- Need help solving  [#permalink]

### Show Tags

15 Oct 2010, 15:48
1
rtaha2412 wrote:
Thanks for the help team!

Question

A computer can perform 1,000,000 calculations per second. At this rate, how many HOURS will it take this computer to perform the$$3.6 x 10^11$$ calculations required to solve a problem?

a 60
b 100
c 600
d 1000
e 6000

b. 100
per hour the computer performs $$3600 X 10^6$$ calculations which is = $$3.6 X 10^9$$
So time taken to perform $$3.6 X 10^11$$ calculations = $$3.6 X 10^11$$/$$3.6 X 10^9$$ = 100hrs
SVP
Joined: 06 Nov 2014
Posts: 1877
Re: A computer can perform 1,000,000 calculations per second. At this rate  [#permalink]

### Show Tags

10 Jun 2015, 02:17
1
A computer can perform 1,000,000 calculations per second. At this rate, how many hours will it take this computer to perform the 3.6*10^11 calculations required to solve a certain problem?

A. 60
B. 100
C. 600
D. 1,000
E. 6,000

Always read carefully. It could be easy to read quickly and miss that the rate is given in seconds but the answer choices are given in hours. The first step is to convert the rate into hours. This will make the calculations easier.
1000000 calculations = 1 x 10^6 calculations
The rate is 3.6 x 10^9 calculations per hour.
3.6 * 10^9 calculations per hour= 3.6 * 10^11 calculations per x hours
(3.6 *10^9 calculations per hour) ÷ (3.6 * 10^11 calculations) = x hours
x hours =
10^2 = 100
Attachments

conversion.jpg [ 18.07 KiB | Viewed 4698 times ]

VP
Joined: 15 Jun 2006
Posts: 1120
Schools: Chicago Booth
Re: A computer can perform 1,000,000 calculations per second. At this rate  [#permalink]

### Show Tags

19 Jun 2006, 10:38
B) 100
1000000 is 10^6, therefore we have the speed of 10^6 per second or 3600x10^6 = 3.6x10^9 per hour. Now, we need to make 10^2 or 100 times more calculations, therefore it will take 100 hours.
VP
Joined: 29 Dec 2005
Posts: 1094
Re: A computer can perform 1,000,000 calculations per second. At this rate  [#permalink]

### Show Tags

19 Jun 2006, 11:12
B. (3.6 x 10^11)/10^6 = 36 x 10^4 seconds = 100 hours
VP
Joined: 02 Jun 2006
Posts: 1070
Re: A computer can perform 1,000,000 calculations per second. At this rate  [#permalink]

### Show Tags

19 Jun 2006, 11:41
B) 100

(3.6 x 10^11)/(60x60x10^6)
= 10^4/100 = 100 hours
Director
Joined: 07 Jun 2006
Posts: 501
Re: A computer can perform 1,000,000 calculations per second. At this rate  [#permalink]

### Show Tags

19 Jun 2006, 12:26
Yurik79 wrote:
A computer can perform 1,000,000 calculations per second.At this rate, how many hours will it take this computer to perform 3.6x10^11 calculations required to solve a certain problem?
A)60
B)100
C)600
D)1000
E)6000

36*10^10/10^6 = 36*10^4/(36*10^2) = 100 hours
Senior Manager
Joined: 07 Jul 2005
Posts: 353
Location: Sunnyvale, CA
Re: A computer can perform 1,000,000 calculations per second. At this rate  [#permalink]

### Show Tags

19 Jun 2006, 12:47
(B)

total time in secs = 3.6 * 10^11/10^6 = 3.6 * 10^5 secs
= 3.6 * 10^5/3600 hrs = 100 hrs
Senior Manager
Joined: 12 Jul 2008
Posts: 484
Schools: Wharton
Re: A computer can perform 1,000,000 calculations per second. At this rate  [#permalink]

### Show Tags

25 Jul 2008, 12:41
djdela wrote:
A computer can perform 1,000,000 calculations per second. At this rate , how many hours will it take this computer to perform the 3.6 x 10^11 calculations required to solve a certain problem.

a)60
b) 100
c) 600
d) 1,000
e) 6000

B

1 x 10^6 calc/sec = 1 x 10^6 calc/sec * 60 sec/min * 60 min/hr = 1 x 10^6 calc/sec * 3600 sec/hr = 1 x 10^6 calc/sec * 3.6 x 10^3 sec/hr = 3.6 x 10^9 calc/hr

3.6 x 10^11 calc / 3.6 x 10^9 calc/hr = 10^2 hr = 100 hr
VP
Joined: 07 Nov 2007
Posts: 1430
Location: New York
Re: A computer can perform 1,000,000 calculations per second. At this rate  [#permalink]

### Show Tags

25 Jul 2008, 12:53
djdela wrote:
A computer can perform 1,000,000 calculations per second. At this rate , how many hours will it take this computer to perform the 3.6 x 10^11 calculations required to solve a certain problem.

a)60
b) 100
c) 600
d) 1,000
e) 6000

(3.6 x 10^11 )/ (10^5) = 3.6 * 10 ^5 sec
= (3600 * 10^2 ) /3600 hrs
= 100 hrs

B
_________________
Smiling wins more friends than frowning
Intern
Joined: 04 May 2014
Posts: 29
Re: 600-700 Ps Problem- Need help solving  [#permalink]

### Show Tags

09 Jun 2015, 14:35
Because the computer can calculate 1,000,000 calculations per second OR 3600,000,000 (3600*1,000,000) per hour, which is similar to 3.6*10^9.
The question states a problem of the magnitude 3.6^11

11-9 = 2, therefore 10^2 = 100
Current Student
Status: DONE!
Joined: 05 Sep 2016
Posts: 364
Re: A computer can perform 1,000,000 calculations per second. At this rate  [#permalink]

### Show Tags

18 Oct 2016, 10:20
100.

Here's the calculation you should have derived:

(3.6 x 10^11 calc) x (1sec/10^6) x (1min/60sec) x (1hr/60min)
Intern
Joined: 17 Nov 2015
Posts: 6
Location: India
Concentration: Entrepreneurship, General Management
Schools: ISB '17
GMAT 1: 750 Q40 V35
GPA: 3.73
WE: Business Development (Energy and Utilities)
Re: A computer can perform 1,000,000 calculations per second. At this rate  [#permalink]

### Show Tags

08 May 2017, 10:59
Yurik79 wrote:
A computer can perform 1,000,000 calculations per second. At this rate, how many hours will it take this computer to perform the 3.6*10^11 calculations required to solve a certain problem?

A. 60
B. 100
C. 600
D. 1,000
E. 6,000

Computer can perform = 10^6 calculations /sec
So for 3.6 x 10^11 calculations it will require 360000 seconds for computing.

i.e., 360000 seconds = 360000/ (60 x 60) hours = 100 hours.
Non-Human User
Joined: 09 Sep 2013
Posts: 12370
Re: A computer can perform 1,000,000 calculations per second. At this rate  [#permalink]

### Show Tags

05 Aug 2019, 20:40
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________
Re: A computer can perform 1,000,000 calculations per second. At this rate   [#permalink] 05 Aug 2019, 20:40
Display posts from previous: Sort by