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A certain computer file contains 8,000 data records, each of which nee

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A certain computer file contains 8,000 data records, each of which nee  [#permalink]

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New post Updated on: 02 Nov 2018, 04:18
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A certain computer file contains 8,000 data records, each of which needs to be updated. If it takes 20 seconds to update 100 records, then at the same rate, approximately how many minutes will it take to update all of the records in the file?

(A) 16
(B) 27
(C) 67
(D) 80
(E) 160

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Originally posted by pushpitkc on 02 Nov 2018, 04:14.
Last edited by Bunuel on 02 Nov 2018, 04:18, edited 1 time in total.
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Re: A certain computer file contains 8,000 data records, each of which nee  [#permalink]

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New post 02 Nov 2018, 04:23
It basicall takes 1 second to update 5 data records , thus according to this rate it will take approx 27 seconds to update 8000 data records

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Re: A certain computer file contains 8,000 data records, each of which nee  [#permalink]

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New post 11 Nov 2018, 23:32
pushpitkc wrote:
A certain computer file contains 8,000 data records, each of which needs to be updated. If it takes 20 seconds to update 100 records, then at the same rate, approximately how many minutes will it take to update all of the records in the file?

(A) 16
(B) 27
(C) 67
(D) 80
(E) 160


Total Work = 8000 pages updation

Rate = 100 pages per 20 seconds

Or 300 pages per minute

Time required to update 8000 pages = Work / Rate

Time = 8000/300 = 26.66 = 27

Hence (B)

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Re: A certain computer file contains 8,000 data records, each of which nee   [#permalink] 11 Nov 2018, 23:32
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