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One millisecond is 0.001 of a second. The costs for a single run of a

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One millisecond is 0.001 of a second. The costs for a single run of a  [#permalink]

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New post 23 Nov 2015, 13:14
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One millisecond is 0.001 of a second. The costs for a single run of a computer program are $1.07 for operating-system overhead, $0.023 per millisecond of computer time, and $4.35 for the mounting of a data tape. What is the total of these three costs for 1 run of a program that requires 1.5 seconds of computer time ?

(A) $7.15
(B) $8.87
(C) $28.96
(D) $35.57
(E) $39.92

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Re: One millisecond is 0.001 of a second. The costs for a single run of a  [#permalink]

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New post 23 Nov 2015, 19:40
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Operating system overhead for 1 run = 1.07 $
Mounting of data tape = 4.35$
Cost per 1 millisecond of computer time = .023 $
Total cost of 1 run of a program that requires 1.5 seconds of computer time
= 1.07 + (.023*1500) + 4.35
=1.07 + 34.5 + 4.35
= 39.92$

Answer E
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One millisecond is 0.001 of a second. The costs for a single run of a  [#permalink]

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New post 25 Nov 2015, 12:59
Bunuel wrote:
One millisecond is 0.001 of a second. The costs for a single run of a computer program are $1.07 for operating-system overhead, $0.023 per millisecond of computer time, and $4.35 for the mounting of a data tape. What is the total of these three costs for 1 run of a program that requires 1.5 seconds of computer time ?


One millisecond = \(\frac{1}{1000}\) Second

Or we can say, 1 second = Thousand milliseconds


Cost for a single run of a computer program = Operating-system overhead + Charges for mounting of a data tape + Variable Cost

Cost for a single run of a computer program = $1.07 + $4.35 + $34.5( 1.5 * $0.023 * 1000) = $39.92


Hence answer is (E) $39.92
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Re: One millisecond is 0.001 of a second. The costs for a single run of a  [#permalink]

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New post 25 Nov 2015, 13:18
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Bunuel wrote:
One millisecond is 0.001 of a second. The costs for a single run of a computer program are $1.07 for operating-system overhead, $0.023 per millisecond of computer time, and $4.35 for the mounting of a data tape. What is the total of these three costs for 1 run of a program that requires 1.5 seconds of computer time ?

(A) $7.15
(B) $8.87
(C) $28.96
(D) $35.57
(E) $39.92


Two of the costs are fixed:
$1.07 for operating-system overhead
$4.35 for the mounting of a data tape

So, let's focus on $0.023 per millisecond of computer time.
Rewrite as: $0.023 for every 0.001 of a second
Multiply both numbers by 1000 to get: $23.00 for every 1 second
Multiply both numbers by 1.5 to get: $34.50 for 1.5 seconds
So, the computer time costs $34.50

$34.50 + $4.35 + $1.07 = MORE THAN $35.57
Answer: E

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One millisecond is 0.001 of a second. The costs for a single run of a  [#permalink]

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New post 26 Jun 2017, 17:07

Good question


First notice that the major cost component is the computer time. For a program that runs for 1.5 seconds the cost will be 1.5 seconds * ($0.023 per millisecond)

Converting 1.5 seconds to milliseconds \(= \frac{1.5}{0.001}\) = 1500
The cost for computer time is 1500*$0.023.

Approximating: Notice that 1500*$.020 is $30 and 1500*$0.002 is $3 this eliminates A,B and C. The precise value is over $33
Now adding the two remaining cost components, i.e system overhead of $1.07 and mounting tape cost of $4.35 brings us over $38 which eliminates D.

The only answer left is E
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Re: One millisecond is 0.001 of a second. The costs for a single run of a  [#permalink]

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New post 19 May 2019, 20:08
Bunuel wrote:
One millisecond is 0.001 of a second. The costs for a single run of a computer program are $1.07 for operating-system overhead, $0.023 per millisecond of computer time, and $4.35 for the mounting of a data tape. What is the total of these three costs for 1 run of a program that requires 1.5 seconds of computer time ?

(A) $7.15
(B) $8.87
(C) $28.96
(D) $35.57
(E) $39.92


Since 1.5 seconds = 1.5 x 1000 = 1500 milliseconds, the total cost is:

1.07 + 0.023(1500) + 4.35 = $39.92

Answer: E
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Re: One millisecond is 0.001 of a second. The costs for a single run of a   [#permalink] 19 May 2019, 20:08
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