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

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1
13 00:00

Difficulty:   45% (medium)

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

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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]

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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  B
Joined: 06 Nov 2014
Posts: 1877
Re: A computer can perform 1,000,000 calculations per second. At this rate  [#permalink]

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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]

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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]

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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]

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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]

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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]

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(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]

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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]

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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
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Intern  Joined: 04 May 2014
Posts: 29
Re: 600-700 Ps Problem- Need help solving  [#permalink]

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I would say answer B
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 B
Status: DONE!
Joined: 05 Sep 2016
Posts: 364
Re: A computer can perform 1,000,000 calculations per second. At this rate  [#permalink]

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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  B
Joined: 17 Nov 2015
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Concentration: Entrepreneurship, General Management
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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]

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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]

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_________________ Re: A computer can perform 1,000,000 calculations per second. At this rate   [#permalink] 05 Aug 2019, 20:40
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