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805+ (Hard)|   Arithmetic|      
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tinashine20
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At the average download speed of 12,000,000 bits per second 26 Nov 2012, 05:09
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D
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95% (hard)

Question Stats:

50% (02:47) correct 50% (02:47) wrong based on 196 sessions

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At the average download speed of 12,000,000 bits per second, 75,000,000 bytes of data can be downloaded in 50 seconds. With a certain dial-up connection, the same task would take 3 hours. Which of the following is closest to the average download speed, in bits per second, of this dial-up connection?

A. 200
B. 1,000
C. 7,000
D. 56,000
E. 240,000
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D
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Bunuel
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At the average download speed of 12,000,000 bits per second 26 Nov 2012, 05:44
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tinashine20
At the average download speed of 12,000,000 bits per second, 75,000,000 bytes of data can be downloaded in 50 seconds. With a certain dial-up connection, the same task would take 3 hours. Which of the following is closest to the average download speed, in bits per second, of this dial-up connection?

A. 200
B. 1,000
C. 7,000
D. 56,000
E. 240,000
Show more

With the high-speed connection the task needs 50 seconds;
With the dial-up connection the same task needs 3 hours = 3*3,600 seconds.

Thus, dial-up connection is 3*3,600/50=216 times slower.

Since the speed of the the high-speed connection is 12,000,000 bits per second, then the speed of the dial-up connection is 12,000,000/216=~56,000 bits per second.

Answer: D.

Hope it's clear.
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jzpat
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At the average download speed of 12,000,000 bits per second 26 Nov 2012, 08:26
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Bunuel
tinashine20
At the average download speed of 12,000,000 bits per second, 75,000,000 bytes of data can be downloaded in 50 seconds. With a certain dial-up connection, the same task would take 3 hours. Which of the following is closest to the average download speed, in bits per second, of this dial-up connection?

A. 200
B. 1,000
C. 7,000
D. 56,000
E. 240,000

With the high-speed connection the task needs 50 seconds;
With the dial-up connection the same task needs 3 hours = 3*3,600 seconds.

Thus, dial-up connection is 3*3,600/50=216 times slower.

Since the speed of the the high-speed connection is 12,000,000 bits per second, then the speed of the dial-up connection is 12,000,000/216=~56,000 bits per second.

Answer: D.

Hope it's clear.
Show more

I have followed a different approach, could you explain me where I was wrong?

So we have to download 75,000,000 bits of data and with the dial-up connection is possible to do so in three hours.
Hence we have a speed of 75,000,000/3= 25,000,000 bites/hour.
Now dividing the 25,000,000 by 3600 (60 minutes * 60 seconds) the result is close to 7,000 bites/second.
Hence according to my calculations the answer should be C.
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At the average download speed of 12,000,000 bits per second 26 Nov 2012, 09:25
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jzpat
Bunuel
tinashine20
At the average download speed of 12,000,000 bits per second, 75,000,000 bytes of data can be downloaded in 50 seconds. With a certain dial-up connection, the same task would take 3 hours. Which of the following is closest to the average download speed, in bits per second, of this dial-up connection?

A. 200
B. 1,000
C. 7,000
D. 56,000
E. 240,000

With the high-speed connection the task needs 50 seconds;
With the dial-up connection the same task needs 3 hours = 3*3,600 seconds.

Thus, dial-up connection is 3*3,600/50=216 times slower.

Since the speed of the the high-speed connection is 12,000,000 bits per second, then the speed of the dial-up connection is 12,000,000/216=~56,000 bits per second.

Answer: D.

Hope it's clear.

I have followed a different approach, could you explain me where I was wrong?

So we have to download 75,000,000 bits of data and with the dial-up connection is possible to do so in three hours.
Hence we have a speed of 75,000,000/3= 25,000,000 bites/hour.
Now dividing the 25,000,000 by 3600 (60 minutes * 60 seconds) the result is close to 7,000 bites/second.
Hence according to my calculations the answer should be C.
Show more

We need to find the download speed, in bits per second. You are calculating in bytes per second (notice that we are told that "75,000,000 bytes of data can be downloaded in ...").

1 byte = 8 bits --> ~7,000 bytes per second = 7,000*8 = 56,000 bits per second.

Hope it's clear.
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At the average download speed of 12,000,000 bits per second 21 Dec 2018, 05:59
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tinashine20
At the average download speed of 12,000,000 bits per second, 75,000,000 bytes of data can be downloaded in 50 seconds. With a certain dial-up connection, the same task would take 3 hours. Which of the following is closest to the average download speed, in bits per second, of this dial-up connection?

A. 200
B. 1,000
C. 7,000
D. 56,000
E. 240,000
Show more

Dear Moderator,
Can we have the OA for this question. Thank you.
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Bunuel
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At the average download speed of 12,000,000 bits per second 21 Dec 2018, 06:02
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stne
tinashine20
At the average download speed of 12,000,000 bits per second, 75,000,000 bytes of data can be downloaded in 50 seconds. With a certain dial-up connection, the same task would take 3 hours. Which of the following is closest to the average download speed, in bits per second, of this dial-up connection?

A. 200
B. 1,000
C. 7,000
D. 56,000
E. 240,000

Dear Moderator,
Can we have the OA for this question. Thank you.
Show more
______________________
Added the OA. Thank you.
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At the average download speed of 12,000,000 bits per second 30 Jan 2025, 21:51
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