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For 5 hours, a photocopier copied at a constant rate of 2
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10 May 2016, 07:56
10 May 2016, 07:56
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Question Stats:
72% (00:54) correct
27% (00:57) wrong based on 368 sessions
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For 5 hours, a photocopier copied at a constant rate of 2 pages every 3 seconds.
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Quantity A |
Quantity B |
The number of pages the photocopier copied in 5 hours |
12,000 |
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Practice Questions
Question: 7
Page: 63
Question: 7
Page: 63
Re: For 5 hours, a photocopier copied at a constant rate of 2
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10 May 2016, 07:57
10 May 2016, 07:57
1
Expert Reply
Explanation
Quantity A, is the number of pages the photocopier copied in the 5 hours. Copying at the rate of 2 pages every 3 seconds is the same as copying at a rate of 40 pages every 60 seconds, or 40 pages per minute.
This rate is the same as copying 2,400 pages every hour, or 12,000 pages in 5 hours.
Quantity A is equal to 12,000 and Quantity B is 12,000, the correct answer is Choice C.
Quantity A, is the number of pages the photocopier copied in the 5 hours. Copying at the rate of 2 pages every 3 seconds is the same as copying at a rate of 40 pages every 60 seconds, or 40 pages per minute.
This rate is the same as copying 2,400 pages every hour, or 12,000 pages in 5 hours.
Quantity A is equal to 12,000 and Quantity B is 12,000, the correct answer is Choice C.
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Re: For 5 hours, a photocopier copied at a constant rate of 2
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12 Jun 2019, 07:19
12 Jun 2019, 07:19
1
sandy wrote:
For 5 hours, a photocopier copied at a constant rate of 2 pages every 3 seconds.
Quantity A |
Quantity B |
The number of pages the photocopier copied in 5 hours |
12,000 |
We can apply some number sense here
GIVEN: The photocopier can copy 2 pages in 3 seconds
This means the photocopier can copy 40 pages in 60 seconds [if we multiply the operating time by 20, the output is multiplied by 20]
In other words, the photocopier can copy 40 pages in 1 MINUTE [since 60 seconds = 1 minute]
This means the photocopier can copy 2400 pages in 60 minutes [if we multiply the operating time by 60, the output is multiplied by 60]
In other words, the photocopier can copy 2,400 pages in 1 HOUR [since 60 minutes = 1 hour]
This means the photocopier can copy 12,000 pages in 5 hours [if we multiply the operating time by 5, the output is multiplied by 5]
We get:
QUANTITY A: 12,000
QUANTITY B: 12,000
Answer: C
Cheers,
Brent
