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Director  Joined: 10 Oct 2005
Posts: 538
A computer can perform 1,000,000 calculations per second. At this rate  [#permalink]

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1
17 00:00

Difficulty:   35% (medium)

Question Stats: 68% (01:36) correct 32% (01:54) wrong based on 365 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

PS83502.01

Originally posted by Yurik79 on 19 Jun 2006, 10:24.
Last edited by Bunuel on 21 Sep 2019, 14:47, edited 2 times in total.
Renamed the topic, edited the question and added the OA.
VP  Joined: 15 Jun 2006
Posts: 1106
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.
Director  Joined: 29 Dec 2005
Posts: 897
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
Director  Joined: 02 Jun 2006
Posts: 922
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
Senior Manager  Joined: 07 Jun 2006
Posts: 480
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: 303
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: 446
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: 1147
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
Manager  Joined: 30 Aug 2009
Posts: 217
Location: India
Concentration: General Management
Re: A computer can perform 1,000,000 calculations per second. At this rate  [#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
Intern  Joined: 04 May 2014
Posts: 29
Re: A computer can perform 1,000,000 calculations per second. At this rate  [#permalink]

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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
SVP  B
Joined: 06 Nov 2014
Posts: 1870
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 5409 times ]

Current Student B
Status: DONE!
Joined: 05 Sep 2016
Posts: 354
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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Location: India
Concentration: Entrepreneurship, General Management
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GMAT 1: 750 Q40 V35 GPA: 3.73
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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.
Director  P
Joined: 18 Dec 2017
Posts: 823
Location: United States (KS)
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

PS83502.01

1 million (6 zeros) per second.

We need to perform 3.6*(10^11). Which is 36*10^10. Let's take out the million (6 zeros so we are left with 4 zeros) 36,0000 Millions

We need number of hours so let's divide by 3600. (60minutes*60seconds)

360000/3600=100

Hence B.

Note: Just play with zeros carefully that's it
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You are missing on great learning if you don't know what this is: Project SC Butler Re: A computer can perform 1,000,000 calculations per second. At this rate   [#permalink] 20 Nov 2019, 18:52
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