What is the meaning of bit times given in context of propogation delay ?

Question

I have already referred this link :

https://gateoverflow.in/14345/what-does-it-mean-when-the-propagation-delay-is-given-in-bits

But I m not getting why are we saying bit times for propogation delay , it should be transmission time because bits/ bandwidth = transimission time .

Please explain precisely .

Answer 1

Whenever propogation delay given in bit times:-  it means time taken to transmit these many bits over channel.

Answer 2

Bit time only calculates the ejection of one bit, it looks at how this bit transmits out of a network interface card at a determined speed i.e.

bit time = $1 / Bandwidth$

Let Bandwidth be 10Mbps, then bit time = $1 / (10 * 10^{6})$$1 / (10 * 10^{6}) \rightarrow 10^{-7} seconds$