Final answer:
It would take approximately 0.1333 seconds to send a 5 megabyte file over a 300 Mbps WiFi network, after converting the file size from megabytes to megabits and dividing by the bandwidth.
Step-by-step explanation:
The question is how long will it take to send a 5 megabyte (MB) file using a 802.11n router operating at 2.5GHz with a bandwidth of 300 Mbps (megabits per second). First, we need to convert megabytes to megabits because bandwidth is typically measured in megabits per second. There are 8 bits in a byte, so 5 MB equals 40 megabits (5 MB * 8).
Next, we divide the size of the file by the bandwidth to get the time in seconds:
Time (in seconds) = File size (in megabits) / Bandwidth (in Mbps)
Time = 40 megabits / 300 Mbps
Time = 0.1333... seconds
Therefore, it would take approximately 0.1333 seconds to send a 5 megabyte file over a 300 Mbps WiFi network, assuming that the network can operate at its maximum bandwidth continuously and there are no other factors that could slow down the transfer.