Given that:

access link rate: $1\mathrm{.}54$ MBPS

RTT from institutional router to server $=2$ secs

Web object size $=100$k bits

avg request rate from browsers to origin servers$=15/$ sec

Why is it that the delays from original server $+$ RTT $=2\mathrm{.}01$ secs$?$ from where did the $0\mathrm{.}01$ secs come from?

Delays from original server includes access link $+$ RTT from

institutional router to server $=2\mathrm{.}01$ secs