A file is transferred from one location to another in 'buckets'. The size of the bucket is 10 kilobytes. Each bucket gets filled at the rate of 0.0001 kilobytes per millisecond. The transmission time from sender to receiver is 10 milliseconds per bucket. After the receipt of the bucket the receiver sends an acknowledgement that reaches sender in 100 milliseconds. Assuming no error during transmission, write a formula to calculate the time taken in seconds to successfully complete the transfer of a file of size N kilobytes.

• each bucket has 10 kb
  so N kb wants N/10 buckets..
  0.0001kb filled in 1ms
  so 10 kb ll be filled in 10/0.0001ms=100000ms
  sender to receiver s 10ms
  ack is 100 ms
  so total time for 1 bucket is (100000+10+100)ms=100110ms
  for N/10 buckets it s 100110*N/10 ms=10011 ms=10.011s
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