Alisha has agreed to send Khushi a 20-megabyte file. They both have a…
2023
Alisha has agreed to send Khushi a 20-megabyte file. They both have a broadband Internet connection. Alisha has to upload her file to a server and then Khushi needs to download it from the same server. The broadband data transfer rates (speeds) are: 1 megabit per second to upload a file and 8 megabits per second to download a file. If P and Q represent the time taken in seconds to upload and download Alisha's file respectively then (PQ) =
- A.
(20, 160)
- B.
(144, 18)
- C.
(18, 144)
- D.
(160, 20)
Attempted by 83 students.
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Correct answer: D
First, convert the file size from megabytes to megabits. Since 1 byte equals 8 bits, a 20-megabyte file is 20 * 8 = 160 megabits. Next, calculate the upload time P. With an upload speed of 1 megabit per second, P = 160 / 1 = 160 seconds. Then, calculate the download time Q. With a download speed of 8 megabits per second, Q = 160 / 8 = 20 seconds. Therefore, the pair (P, Q) is (160, 20).