Question

One byte is a unit of memory size used with computers. One megabyte contains approximately ${10}^6$ bytes and Pauls computer hard-drive accesses information at a rate of $150$ megabytes per second. If Paul wants to work with $5$ files on his computer that are $2,340\times {10}^6$ bytes each, approximately how long will it take his computer to access them?

• A. $15.6seconds$
• B. $9seconds$
• C. $1.3minutes$
• D. $78minutes$

Answer 1

The correct option is C $1.3minutes$

1 MB = ${10}^6$
Rate = $150$ MB/sec
Speed = $5\times 2340\times {10}^6$
Time = $\frac{5\times 2340\times {10}^6}{150\times {10}^6}=78$
Time in seconds = $\frac{78}{60}=1.3$